UNF Bolts & Screws

UNF (Unified Fine) Bolts & Screws

UNF (Unified Fine) threaded fasteners were phased in on BSA, Norton, and Triumph motorcycles produced in the late 1960's and onwards. Used where both bolt and nut were made of steel. Also at this time most screws and bolts that threaded directly into alloy castings changed to UNC (Unified Coarse) threads for better holding power in the softer material.

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  • 21-1910 Bolt
    21-1910 Bolt
    BOLT,PILLION FOOTREST
    NZ$ 1.60
    NZ$ 1.45
  • 21-1934 Bolt
    21-1934 Bolt
    Bottom Engine Bolt
    Diameter ⌀: 3/8 inch
    Length UH: 7&15/16 inch
    Thread Form: UNF 24tpi
    Fits: Triumph BSA Singles
    1969 to 1970
    NZ$ 8.05
    NZ$ 7.25
    Out Of Stock
  • 21-1945 Plug
    21-1945 Plug
    Sump Plate Drain Plug
    Diameter ⌀: 5/16 inch
    Length UH: 3/8 inch
    Thread Form: UNC 18tpi
    Hex Size: 1/2 inch AF
    Fits: Triumph BSA 650 1971
    aka: S1945
    NZ$ 1.35
    NZ$ 1.20
  • 21-1953 Screw
    21-1953 Screw
    Heatshield Screw
    Diameter ⌀: 1/4 inch
    Length UH: 1&3/4 inch
    Thread Form: UNF 28tpi
    Head Style: Pan Pozidriv
    Finish: Chrome Plated
    Fits: T100C TR6C Exhaust
    NZ$ 1.90
    NZ$ 1.70
  • 21-1969 Bolt
    21-1969 Bolt
    Footrest Bolt
    Diameter ⌀: 1/2 inch
    Length UH: 1&1/8 inch
    Thread Form: UNF 20tpi
    Hex Size: 3/4 inch AF
    Fits: Triumph 650
    aka: S1969
    NZ$ 1.60
    NZ$ 1.45
  • 21-1971 Bolt
    21-1971 Bolt
    Pivot Bolt
    Triumph BSA
    Folding Footrests
    NZ$ 5.90
    NZ$ 5.30
  • 21-1978 Bolt
    21-1978 Bolt
    Mainstand Bolt
    Triumph BSA
    NZ$ 11.40
    NZ$ 10.25
  • 21-1979 Screw
    21-1979 Screw
    Sidecover Screw
    BSA Rocket 3
    Diameter ⌀: 1/4 inch
    Length UH: 7/16 inch
    Thread Form: UNF 28tpi
    Head Style: Slotted Button
    NZ$ 8.50
    NZ$ 7.65
  • 21-1986 Screw
    21-1986 Screw
    Diameter ⌀: 1/4 inch
    Length UH: 11/16 inch
    Thread Form: UNF 28tpi
    Head Style: Posidriv Cheese
    NZ$ 2.15
    NZ$ 1.90
  • 21-2010 Bolt
    21-2010 Bolt
    Sprocket Fixing Bolt
    Diameter ⌀: 1/4 inch
    Length UH: 13/16 inch
    Thread Form: UNF 28tpi
    Hex Size: 3/8 inch AF
    Finish: Plated
    NZ$ 4.30
    NZ$ 3.90
  • 21-2011 Bolt
    21-2011 Bolt
    Brake Drum Bolt
    Diameter ⌀: 5/16 inch
    Length UH: 11/16 inch
    Thread Form: UNF 24tpi
    Hex Size: 1/2 AF
    aka: S2011
    NZ$ 3.15
    NZ$ 2.85
  • 21-2015 Plug
    21-2015 Plug
    Frame Drain Plug
    Triumph BSA
    Diameter ⌀: 3/8 inch
    Length UH: 3/8 inch
    Thread Form: UNF 24tpi
    Hex Size: 9/16 inch AF
    aka: S2015
    NZ$ 2.70
    NZ$ 2.45
  • 21-2045 Pivot Pin
    21-2045 Pivot Pin
    Brake Pivot Pin
    Triumph BSA Twins
    aka: S2045
    NZ$ 25.90
    NZ$ 23.30
  • 21-2048 Pivot Screw
    21-2048 Pivot Screw
    Pivot Screw
    Alloy Lever
    aka: S2048
    NZ$ 6.70
    NZ$ 6.05
  • 21-2077 Mainstand Bolt
    21-2077 Mainstand Bolt
    Mainstand Bolt
    Triumph BSA
    aka: S2077
    NZ$ 11.30
    NZ$ 10.20
  • 21-2079 Screw
    21-2079 Screw
    Condensor Mounting Screw
    Diameter ⌀: 3/16 inch
    Length UH: 1/2 inch
    Thread Form: #10-32 UNF 32tpi
    Head Style: Panhead Posidriv
    aka: S2079
    NZ$ 0.50
    NZ$ 0.45
  • 21-2087 Swingarm Bolt
    21-2087 Swingarm Bolt
    Swingarm Pivot Bolt
    Triumph BSA
    aka: S2087
    NZ$ 41.25
    NZ$ 37.10
  • 21-2094 Footrest Bolt
    21-2094 Footrest Bolt
    Footrest Bolt
    BSA B50
    Diameter ⌀: 3/8 inch
    Length UH: 12 inch
    Thread Form: UNF 24tpi
    aka: S2094
    NZ$ 21.60
    NZ$ 19.40
  • 21-2105 Screw
    21-2105 Screw
    Side Stand Screw
    Diameter ⌀: 3/8 inch
    Length OA: 1&1/4 inch
    Thread Form: UNF 24tpi
    Head: Slotted Countersunk
    Fits: Triumph TR5T
    aka: S2105
    NZ$ 4.30
    NZ$ 3.90
  • 21-2112 Bolt
    21-2112 Bolt
    Bottom Engine Mount Bolt
    Diameter ⌀: 7/16 inch
    Length UH: 10&1/8 inch
    Thread Form: UNF 20tpi
    Hex Size: 5/8 inch AF
    Fits: Triumph BSA
    Oil in Frame models
    aka: S2112
    NZ$ 28.70
    NZ$ 25.85
  • 21-2157 Bolt
    21-2157 Bolt
    Clutch Centre Assembly Bolt
    Diameter ⌀: 1/4 inch
    Length UH: 1&3/8 inch
    Thread Form: UNF 28tpi
    Hex Size: 7/16 inch AF
    Fits: Triumph 750 Twins
    aka: S2157
    NZ$ 2.00
    NZ$ 1.80
  • 21-2186 Screw
    21-2186 Screw
    Header Clip Screw
    Diameter ⌀: 3/16 inch
    Length UH: 21/32 inch
    Thread Form: #10-32 UNF 32tpi
    Head Style: Fillister Posidriv
    Fits: Triumph 750 Twin
    Push-In Header Clip
    NZ$ 1.05
    NZ$ 0.95
  • 21-2191 Screw
    21-2191 Screw
    Lever Pivot Screw
    Diameter ⌀: 1/4 inch
    Length UH: 1&1/8 inch
    Thread Form: UNF 28tpi
    Head Style: Fillister Posidriv
    Fits: Triumph BSA
    aka: S2191
    NZ$ 1.05
    NZ$ 0.95
  • 21-2196 Screw
    21-2196 Screw
    Caliper Cover Screw
    Switch Block Screw
    Diameter ⌀: 9/64 inch
    Length OA: 1/4 inch
    Thread Form: #6-32 UNC 32tpi
    Head Style: Countersunk Posidriv
    Fits: Triumph Disc
    aka: S2196
    NZ$ 1.10
    NZ$ 1.00
  • 21-2206 Rocker Bolt
    21-2206 Rocker Bolt
    Rocker Cover
    Stepped Bolt
    Thread: 3/8 inch UNF 24tpi
    Fits: Triumph 750 Twins
    aka: S2206
    NZ$ 14.45
    NZ$ 13.00
  • 21-2207 Bolt
    21-2207 Bolt
    Front Disc Bolt
    Diameter ⌀: 3/8 inch
    Length UH: 4&1/2 inch
    Thread Form: UNF 24tpi
    Hex Size: 9/16 inch AF
    Fits: Disc Brake Triumph
    aka: S2207
    NZ$ 11.05
    NZ$ 9.95
  • 21-2208 Shouldered Bolt
    21-2208 Shouldered Bolt
    Shouldered Bolt
    Muffler
    Fits: Triumph TR5T
    aka: S2208
    NZ$ 2.70
    NZ$ 2.45
  • 21-2230 Screw
    21-2230 Screw
    Header Clip Screw
    Diameter ⌀: 3/16 inch
    Length UH: 1 inch
    Thread Form: #10-32 UNF 32tpi
    Head Style: Panhead Posidriv
    Fits: Triumph 750 Twin
    Push-In Header Clip
    aka: S2230
    NZ$ 1.55
    NZ$ 1.40
  • 21-2244 Eyebolt
    21-2244 Eyebolt
    Torque Arm
    Eye Bolt
    Diameter ⌀: 5/16 inch
    Thread Form: UNF 24tpi
    Fits: Triumph T160
    NZ$ 8.05
    NZ$ 7.25
  • 21-2300 Bolt
    21-2300 Bolt
    Front Tank Bolt
    Triumph T160
    NZ$ 6.55
    NZ$ 5.90
  • 21-2318 Bolt
    21-2318 Bolt
    Kickstart Lever Bolt
    Triumph T160
    NZ$ 15.55
    NZ$ 13.95
  • 21-7004 Shouldered Bolt
    21-7004 Shouldered Bolt
    Shouldered Bolt
    Torque Stay to Swing Arm
    Triumph 750 Twin
    NZ$ 2.80
    NZ$ 2.55
  • 21-7007 Bolt
    21-7007 Bolt
    Mounting Bolt
    Rear Master Cylinder
    Diameter ⌀: 5/16 inch
    Thread Form: UNF 24tpi
    Triumph Disc Brake
    aka: S7007
    NZ$ 3.75
    NZ$ 3.40
  • 21-7021 Bolt
    21-7021 Bolt
    Sidecover Bolt
    Triumph Silver Jubilee
    Diameter ⌀: 5/16 inch
    Length UH: 1&3/4 inch
    Thread Form: UNF 24tpi
    Hex Size: 1/2 inch AF
    NZ$ 2.15
    NZ$ 1.90
  • 21-7028 Grub Screw
    21-7028 Grub Screw
    Grub Screw
    Carb Bracket
    Triumph T140E
    Mk2 Amal
    NZ$ 1.05
    NZ$ 0.95
  • 21-7036 Screw
    21-7036 Screw
    Pivot Screw
    Clutch Lever
    Steel Levers
    Triumph
    NZ$ 1.15
    NZ$ 1.00
  • 21-7038 Screw
    21-7038 Screw
    Mount Screw
    Master Cylinder
    Diameter ⌀: 3/16 inch
    Length UH: 3/4 inch
    Thread Form: #10-32 UNF 32tpi
    Head Style: Allen Head Cap
    Triumph Disc Brake
    NZ$ 1.45
    NZ$ 1.30
  • 21-7041 Bolt
    21-7041 Bolt
    Rear Hub Bolt
    Diameter ⌀: 3/8 inch
    Length UH: 5&3/4 inch
    Thread Form: UNF 24tpi
    Triumph Disc Brake
    NZ$ 15.80
    NZ$ 14.20
  • 21-7042 Bolt
    21-7042 Bolt
    Front Hub Bolt
    Triumph T140D Special
    6 Hole Mag Wheel
    Diameter ⌀: 5/16 inch
    Length UH: 4&3/8 inch
    Thread Form: UNF 24tpi
    Hex Size: 1/2 inch AF
    NZ$ 16.10
    NZ$ 14.50
  • 21-7043 Bolt
    21-7043 Bolt
    Rear Hub Bolt
    Triumph T140D Special
    6 Hole Mag Wheel
    Diameter ⌀: 5/16 inch
    Length UH: 5&1/2 inch
    Thread Form: UNF 24tpi
    Hex Size: 1/2 inch AF
    NZ$ 8.65
    NZ$ 7.80
    Out Of Stock
  • 21-7047 Bolt
    21-7047 Bolt
    Brake Arm Bolt
    Triumph 750 Twin
    1980 onwards
    NZ$ 1.05
    NZ$ 0.95
  • 21-7049 Grub Screw
    21-7049 Grub Screw
    Seat Lock Grub Screw
    Triumph 1979 onwards
    NZ$ 1.60
    NZ$ 1.45
  • 21-7064 Adjuster Screw
    21-7064 Adjuster Screw
    Primary Adjuster Screw
    Diameter ⌀: 1/4 inch
    Length UH: 2 inch
    Thread Form: UNF 28tpi
    Triumph 750 Twins
    1980 onwards
    NZ$ 2.15
    NZ$ 1.90
  • 21-7065 Bolt
    21-7065 Bolt
    Brake Arm Bolt
    Triumph 1980 onwards
    NZ$ 1.60
    NZ$ 1.45
  • 21-7083 Bolt
    21-7083 Bolt
    Starter Drive Bolt
    Diameter ⌀: 1/4 inch
    Length UH: 11/16 inch
    Thread Form: UNF 28tpi
    Triumph Electric Start
    1981 onwards
    NZ$ 3.20
    NZ$ 2.90
  • 21-7085 Bolt
    21-7085 Bolt
    Mounting Bolt
    Triumph Twin Disc
    NZ$ 13.70
    NZ$ 12.35
  • 21-7119 Bolt
    21-7119 Bolt
    Caliper Mount Bolt
    Diameter ⌀: 5/16 inch
    Length UH: 1&1/4 inch
    Thread Form: UNF 24tpi
    Triumph Twin Disc
    NZ$ 6.05
    NZ$ 5.45
  • 60-4183 Banjo Bolt
    60-4183 Banjo Bolt
    Banjo Bolt
    Brake Hose to Master Cylinder
    Diameter ⌀: 3/8 inch
    Thread Form: UNF 24tpi
    aka: D4183
    NZ$ 16.85
    NZ$ 15.15
  • 60-7236 Banjo Bolt
    60-7236 Banjo Bolt
    Banjo Bolt
    Brake Hose to Rear Calliper
    NZ$ 6.95
    NZ$ 6.25
  • 70-6744 Bolt
    70-6744 Bolt
    Exhaust Clamp Bolt
    Push Over Header
    Thread: 5/16 inch UNF
    aka: E6744
    NZ$ 6.25
    NZ$ 5.60

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