An Easy To Read Chart Of Screw Sizes And Thread Counts

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Screw Sizes & Threads

The following provides a comprehenisve table showing the equivalant measurements in inches (fractions & decimals) and millimeters for various screw sizes. The second table provides the number of threads per inch for coarse (UNC) and fine (UNF) threads for various size screws and bolts. The first number is the diameter of the screw/bolt in inches and the second is the number of threads per inch.

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• Stainless Steel Shackles
  • USA Made Anchor Shackle With Screw Pin
  • USA Made Round Pin Anchor Shackle
  • Anchor Shackle
  • Bolt Chain Shackle
  • Bow Shackle
  • Chain Shackle
  • Long D Shackle w/ Captive Pin
  • Long D Shackle w/ Screw Pin
  • Round Pin Anchor Shackle
  • Round Pin Chain Shackle
  • Special Bow Shackle w/ No-Snag Pin
  • Special D Shackle with No-Snag Pin
  • Stainless Bolt Anchor Shackle
  • Straight D Shackle
  • Straight D Shackle with Captive Pin
  • Twist Shackle (Cast)
  • Twist Shackle with No-Snag Pin
  • Wide D Shackle
  • Wide D Shackle With No-Snag Pin
  • Halyard Shackle with Key Pin
  • Long D Shackle Shackle w/ Key Pin
  • Headboard Shackle w/ Captive Pin
  • Stamped D Shackle
  • Webbing Shackle
  • Survival Bracelet Accessories
• Stainless Steel Turnbuckles
  • Turnbuckle Components (Bodies, etc.)
    • Turnbuckle Body (Closed)
      • Coarse Thread Closed Turnbuckle Bodies
      • Fine Thread Closed Turnbuckles Bodies
    • Turnbuckle Body (Forged)
    • Turnbuckle Body Cast
    • Nuts, Wing & Turnbuckle
  • Cast Body Jaw And Eye Turnbuckle
  • Forged Jaw And Eye Turnbuckle (Open Body)
  • Turnbuckle (Closed Body) Jaw & Jaw
  • Turnbuckle (Closed Body) Jaw & Swage
  • Turnbuckle (Closed Body) Toggle & Swage
  • Turnbuckle (Closed Body) Toggle & Toggle
  • Turnbuckle (Open Body-Cast) Eye & Eye
  • Turnbuckle (Open Body-Cast) Hook & Eye
  • Turnbuckle (Open Body-Cast) Hook & Hook
  • Turnbuckle (Open Body-Cast) Jaw & Jaw
  • Turnbuckle (Open Body-Forged) Eye & Eye
  • Turnbuckle (Open Body-Forged) Hook/Eye
  • Turnbuckle (Open Body-Forged) Hook/Hook
  • Turnbuckle (Open Body-Forged) Jaw & Jaw
  • Turnbuckle (Open Body-Forged) Stud & Stud
• Stainless Steel Wire Rope
  • Wire Rope 1 x 19 (304)
  • Wire Rope 1 x 19 (316)
  • Wire Rope 7 x 19 (304)
  • Wire Rope 7 x 19 (316)
  • Wire Rope 7 x7 (316)
  • Wire Rope Lifeline - 7 x 7 PVC (316)
• Stainless Steel Chain
  • Anchor Chain (BBB)
  • Commercial Chain
  • Lifting Chain
  • Stainless Safety Chain
  • Proof Coil Chain
  • High Test Chain
  • Long Link Chain
  • Sash Chain
  • Twist Link Chain
  • Single Jack Chain
  • Double Loop Chain
  • Cast And Forged Connecting Link
  • Quick Link Page
    • Quick Link
    • Square Quick Link
    • Long Quick Link
    • Delta Quick Link
    • Pear Quick Link
  • Chain Hooks
    • Clevis Grab Hook
    • Clevis Slip Hook
    • Eye Grab Hook
    • Eye Slip Hook
    • Swivel Eye Hook
    • Threaded Shank Hook
  • Master Links
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• Stainless Steel Deck & Cabin Hardware
  • Cleats and Chocks
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    • Stainless Folding Cleat
    • Stainless Steel E-Z Push-up Cleats
    • Studded Cleat
    • Herreshoff Cleat
    • Trimline Cleat
    • Flagpole Cleat
    • Flat Top Cleats
    • Lifting Eye Cleat
    • Mooring Bitt Cleat
    • Bow Chocks, (pair)
    • Skene Chocks, (pair)
    • Straight Chock
  • Rail, Handrail And Bimini Fittings
    • Bimini Hardware
      • Bimini Fittings, Deck & Rail Hinges
      • Bimini Fittings, Top Caps & Slides
      • Bimini Top Cap & Swivel Base
    • Rail End Caps (Flat)
    • Rail Fittings, Rail Ends
    • Rail Fittings, 3-Way Corner
    • Rail Fittings, 4-Way Tee and Corner
    • Rail Fittings, 60 & 90 Degree Tee
    • Rail Fittings, 90 T with Eye
    • Rail Fittings, Bow Form & Elbow
    • Rail Fittings, End & Center
    • Rail Fittings, Rectangular Base
    • Rail Fittings, Round Base
    • Rail Fittings, Take-Apart Slides
    • Rail Tubing
  • 6 Inch Deck Access Hatch
  • Hinges
    • Flush Hinges For Both Doors and Tables
    • Hatch Hinges
    • Hinges, Door - Equal & Unequal
    • Hinges, H.D. Flush Strap
    • Hinges, Heavy Duty Offset Door
    • Hinges, Strap & Butt
    • Hinges, T Strap
    • Hinges, Take-Apart
  • Hose Deck Fills
  • Swim Platforms
    • Teak Platforms
    • White Poly Swim Platforms
  • Through Hull Fittings
  • Chain & Deck Pipe
  • Rub Rail
    • Stainless Steel Rub Rail Ends
    • Stainless Steel Rub Strakes
  • Stainless Fairlead and Gasket
  • Brackets, 90 Degree Angles
  • Door Stop & Catch
  • Hooks, Handles and Holders for Deck and Cabin
    • Holders, "Holdall" Spring Clamps
    • Holders, Boat Hook Holders
    • Hooks, Awning & Fender
    • Hooks, Cabin/Clothes
  • Latches And Hasps
    • Barrel Bolt
    • Brackets, Folding Table
    • Hasps, Padlocks and Locking
    • Hook, Door
  • Handrails
  • Flush Lift Rings and Slam Latches
    • Hatch, Flush Deck Latches
    • Hatch, Flush Lift Rings
  • Winch Handle Holder
  • Utility Wall Clip
  • Hawse Deck Pipes
  • Transom Drain Plugs
  • Floor Drain Plate/Vent
  • Louvered Vents
  • Antenna Mounts
    • Antenna Mount, Adjustable Rail
    • Antenna Mount, Rail/Surface
    • Antenna Mount, Ratchet
  • Fishing Rod Holders
    • Fishing Rod Holder, Flush Mount
    • Fishing Rod Holder, Removable
    • Fishing Rod Holder, Side Mount
    • Four Tube Fishing Rod Holder
    • Stainless Steel Rod Holder, Rail Mount
  • Flag/Pennant Staff, Bow Rail
  • Folding Boat Step
  • Lighting and Electrical
    • Lights, Navigation
  • Bow/Stern Eye, U-Bolt
  • Fender Hook
  • Microphone Clip
  • Shore Power Cable Holder
  • Ski Tow Ring (Transom Mount)
  • Pintles & Gudgeons, Dinghy/Keelboat
• Stainless Steel And Other Rigging Hardware
  • Kong Elastic Tethers
  • Machine Swage Fittings
    • Machine Swage Pelican Hook With Stud
    • Swage Fork
    • Swage Domehead
    • Swage Eye
    • Swage Marine Eye
    • Swage Marine Fork
    • Swage Marine Toggle
    • Swage Stemball & Cups
    • Swage Stud Terminal
    • T Terminals & Plates
    • Terminal Gate Eye
  • Lifeline Fittings (Hand Crimp)
    • Hand Swage Gate Eye (Non-Swivel)
    • Hand Swage Joined Gate Eyes (Non-Swivel)
    • Hand swage Joined Swivel Gate Eyes
    • Hand Swage Lifeline Adjuster
    • Hand Swage Pelican Hook
    • Hand Swage Short Stud
    • Hand Swage Stud
    • Hand Swage Swivel Gate Eye
    • Hand Swage Toggle
    • Hand Swage Toggle Turnbuckle
    • Hand Swage Tool
    • Mini Hand Swager
  • Thimble, Federal Specification 304SS
  • Thimble, Federal Specification 316SS
  • Thimble, Heavy Duty
  • Thimbles, Extra Heavy Duty
  • Thimbles, Standard
  • Blocks and Sheaves
    • Mini Pulley Blocks w/ 1 Sheave
    • Schaefer Blocks
      • Cheek Blocks
        • Schaefer 3 Series Cheek Blocks
        • Schaefer 5 Series Cheek Block
        • Schaefer 7 Series Cheek Blocks
        • Schaefer M-Series Foot - Cheek Block
      • Clamp-on Furling Blocks
      • Double Blocks
      • Double Blocks with Becket
      • Exit Blocks
      • Fiddle Blocks
      • Fiddle Blocks With Becket
      • Fiddle Blocks with Cam and Becket
      • Lashing Block
      • Single Blocks
        • Schaefer 5 Series Single Blocks
        • Schaefer 7 Series Single Blocks
        • Schaefer M-Series Single Blocks
        • Schaefer Series 3 Single Blocks
      • Single Blocks with Becket
    • Seine (Snatch) Blocks
    • Snatch Blocks
    • Square Swivel Eye Blocks
    • Stainless Sheaves
      • Rope Sheave (Bushing)
      • Rope Sheave with Bearings
      • Rope Sheave with Bushing
      • Wire Rope Sheave with Bearings
      • Wire Rope Sheave with Bushing
    • Surface Mount Blocks
      • Surface Mounted Block with Sheave
    • Swivel Blocks w/ 1 Sheave
    • Swivel Blocks w/ 2 Sheaves
    • Swivel Eye Blocks w/ 1 Sheave
    • Swivel Eye Blocks w/ 2 Sheaves
  • Wire Rope Clip, 304 Cast
  • Wire Rope Clip, 316 Forged
  • Wire Rope Clips, Chair Clips
  • Bimini/Webbing Clips
  • Boom Bails, Heavy Duty - Forged
  • C Link
  • Chainplates
  • Clevis Pins
  • Fixed Snap Shackles
  • Oval Swage Sleeve
    • Aluminum Stop Sleeve
    • Aluminum Swage Sleeve
    • Cooper Stop sleeve
    • Copper Swage Sleeve
    • Stainless steel oval sleeve
    • Zinc Plated Copper Swage Sleeve
  • Quick Release Pins, Suncor
    • Suncor Quick Release Pin Style D
    • Suncor Quick Release Pin Style M
  • Snap Shackles, Cast Jaw Swivel
  • Stainless Steel Hooks and Rings
    • Cunningham Hooks
    • D Rings
    • Downhaul Hooks
    • Heavy Duty D Rings
    • Rectangular Rings
    • Reefing Hooks
    • Round Rings
    • S Hooks
    • Tack (Lashing) Hooks
    • Triangle Rings
    • U Hooks
  • Stamped Jaw Swivel Snap Shackles
  • Swivel Snap Shackles
  • Swivels, Regular and Heavy Duty
    • Federal Spec. Jaw and Eye Swivel (AN100)
    • Swivels, Eye & Eye
    • Swivels, Eye & Jaw
    • Swivels, Heavy Duty Eye & Eye
    • Swivels, Heavy Duty Eye & Jaw
    • Swivels, Heavy Duty Jaw & Jaw
    • Swivels, Jaw & Jaw
  • Threaded Pelican Hook
  • Toggle Pins
  • Toggle, Includes Pin & Ring
    • 316 Stainless Steel Rigging Toggle
    • 316 Stainless Steel Rigging Toggle Traditional
  • Triangular Plates
• Stainless Ratchet Buckle & Tie-Down Accessories
  • Additional Buckles (Non-Ratcheting)
  • Jacklines
  • Nylon Webbing
  • Over-Center Buckle Assembly With Clips
  • Ratchet Assembly with Flat hooks
    • Stainless Ratchet Assmeblies With Flat Hooks And 1" Blue Webbing
    • With 1" Webbing
    • With 1.5" Blue Webbing
    • With 1.5" Webbing
    • With 2" Blue Webbing
    • With 2" Webbing
  • Ratchet Assembly with J hooks
    • With 1" Blue Webbing
    • With 1" Webbing
    • With 1.5" Webbing
    • With 1.5" Blue Webbing
    • With 2" Webbing
    • With 2' Blue Webbing
  • Ratchet Assembly with S Hooks
    • With 1" Webbing and S Hooks
    • With 1-1/2" Webbing
  • Ratchet Buckles
  • Stainless Ratchet Assembly with Clips
    • With 1" Blue Webbing
    • With 1" Webbing
    • With 1-1/2" Blue Webbing
    • With 1-1/2" Webbing
    • With 2" Blue Webbing
    • With 2" Webbing
  • Webbing Assemblies
  • Webbing Hardware Hooks and clips
    • Delta Link For Webbing
    • Double J Hooks
    • Flat Hook
    • Tie Downs
    • Web 'Star' Adjuster
    • Web Adjuster Slide
    • Web Shackle
    • Web Threading Plate
    • Welded 'S' Hook
  • Webbing Kits and Hangers
• Lifeline And Stanchion Page
  • Hand Crimp Lifeline Parts
  • Lifeline Wire Rope With PVC
  • Suncor Quick Attach Lifeline Kits
  • Lifeline Wire Rope, Uncoated
  • Stanchions & Brace
  • Stanchion Base (Suncor - Cast)
  • Pelican Hook
  • Stanchion Base (Schaefer - Welded)
  • Stanchion Caps
  • Stanchion Slide with Eye
  • Stanchion Ring
  • Stanchion & Furling Blocks
• Stainless Steel Eye Bolts
  • Forged Eyebolts With No Shoulder
  • Forged Eyebolts With Shoulder
  • Unwelded Eyebolts
    • 304 Stainless Steel Unwelded Eyebolts
    • 316 Stainless Steel Unwelded Eyebolts
  • Welded Eyebolts (Metric and Standard)
    • Metric Stainless Welded Eyebolts
    • Standard Stainless Welded Eye Bolt
  • Cast Lifting Eye Nut
  • Forged Lifting Eye Nut
  • J-Bolts
  • Machine Eye Bolt
  • Lag Eye Screw
  • Lag Ring Bolt
  • Metric Shoulder Eye Bolt
    • M6 Stainless Metric Shoulder Eye Bolt
    • M8 Stainless Metric Shoulder Eye Bolt
    • M10 Stainless Metric Shoulder Eye Bolt
    • M12 Stainless Metric Shoulder Eye Bolt
    • M16 Stainless Metric Shoulder Eye Bolt
    • M18 Stainless Metric Shoulder Eye Bolt
    • M20 Stainless Metric Shoulder Eye Bolt
    • M24 Stainless Metric Shoulder Eye Bolt
  • Eyebolts with Rings
  • Special Eyebolts
  • Eye End
• Stainless Steel Hooks & Spring Clips
  • Asymmetrical Harness Clip
  • Chain Hooks
    • Threaded Shank Hook
    • Clevis Grab Hook
    • Clevis Slip Hook
    • Eye Grab Hook
    • Eye Slip Hook
    • Swivel Eye Hook
  • Forged Grab and Slip Hooks
    • Grab Hook - Weld On
    • Grab Hook -Bolt On
  • Harness Clips with Extras
  • Heavy Duty Swivel Eye Hook
  • Key Lock Spring Clip
  • Mini Clip
  • Mooring Hook Kit
  • Rounded Harness Clip
  • Screw Lock Harness Clip
  • Single & Double Swivel Eye Bolt Snaps
  • Spring Clip & Eye (Snap Hook)
  • Spring Clip & Eye Key Lock
  • Spring Clip (Snap Hook)
  • Spring Clip w/ Key Lock
  • Spring Clip w/ Screw Lock
  • Spring Clip w/ Special Gate
  • Spring Gate Snap
  • Stainless Key Ring
  • Threaded Shank Hook
  • Trigger Snap
  • Unthreaded Shank Hook
  • Wide Asymmetrical Clip
  • Eye Hook
  • Fixed Eye Snap
  • Spring Clip (Wire Lever)
  • Swivel Eye Snap
  • Asymmetrical Spring Clip
  • Chain Clip
  • Double Action Safety Hook, Wichard
  • Shock Cord Hooks and Hog Rings
• Stainless Steel Pad Eyes
  • Anchor Base With Stud
  • Heavy Duty Folding Pad Eye
  • Hinged/Folding Cast Pad Eye
  • Lashing Rings
    • Bolt-On Lashing Ring
    • Weld On Lashing Ring, Bent
  • Stainless Steel Hoist Assemblies
    • Stainless Steel Anchor Base With Shackle
  • Stainless Swivel Pad Eye
  • Stainless Tow Pad Eye
  • Stamped Diamond Pad Eye
  • Swivel Pad Eye With Ring
  • Weld-on Lashing Ring
  • Oblong Pad Eyes & Backing Plates
  • Pad Eyes, Tie-Down & Footmans Loops
  • Heavy Duty/Oblong Pad-eyes
  • Stamped Pad Eyes
  • Standard Pad Eyes
  • Eye Strap Pad Eyes, 2 Hole/4 Hole
  • Folding Heavy-Duty Pad Eyes, Forged
  • Round Pad Eyes
  • Heavy Duty Square Pad Eyes
  • Heavy Duty Diamond Pad Eyes
  • Large Mast Pad Eyes
  • Pad Eyes, Anchor/ Anchor With Swivel
  • Pad Eyes, Lifting Ring
  • Pad Eyes, Removable Eye Deck Plate
  • Side Ring Pad Eyes
• Stainless Steel U-Bolts
  • J Bolts
  • Standard U-Bolt
  • U-Bolt w/ Plate (Standard Thread)
  • U-Bolt, Bow/Stern Eye
  • Long U-Bolt
  • Square U-Bolt
• Stainless Steel Trailer Parts & Accessories
  • Anchor Points
  • Roller Pins
  • Stainless Roller Brackets
  • Stainless Steel Trailer Tongue
  • Stainless Steel Trailer Winch
  • Trailer Couplers
  • Trailer Hitch Balls
  • Trailer Safety Chain
  • Trailer U-Bolt
• MicroStar LED Lights by Suncor
  • 12 Volt LED Microstar Lights
  • 24 Volt LED Microstar Lights
  • LED Tri Star Back Mount
  • LED Tri-Star Microstar Light
  • LED Tristar Light With Stalk
  • Microstar Transformers
• Stainless Steel And Other Tools
  • Cutting Tools (Wire Rope & Bolt/Chain)
  • Hand Swage Tool
  • Johnson Crimping Tools
  • Passivating Fluid
  • Stainless Steel Shackler & Bottle Opener
  • Steritool Stainless Screwdrivers
  • Swage It Swaging Tool
  • Stainless Adjustable Wrenches
  • Stainless Steel Locking Pliers
  • Stainless Steel Spanner Wrenchs
  • Hand Riverting Tools
  • Steritool Stainless Steel Open End Wrenches
• Stainless Steel Anchors and Accessories
  • Stainless Steel Anchor Rollers And Parts
    • Anchor Roller, Replacement Wheels
  • Anchor Swivels
    • Anchor Swivel
    • Anchor Swivel Multi-Directional
    • Anchor Swivel Replacement Pins
  • Folding Grapnel Anchors in Various Colors
  • Anchor Bracket, Stanchion-Mount
  • Anchor Chain Snubber
  • Anchor Chocks
  • Anchor Tensioner, AT3 Anchor-Tite
  • Chain Stopper
  • USCG Chain Stopper
  • Galvanized Folding Grapnel Anchors

Bestsellers

• 1/8" Stainless Steel Delta Quick Link
• Stainless Steel WIRE ROPE 316, 7x7, 1/16", Per Foot

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