Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
Hex Cap Screw
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  • Description
  • Parameters
  • Application
  • Custom Reviews


MOQ: 500kgs
  • Product Features:

    Standard: ASME/ANSI B 18.2.1, IFI149,DIN931, DIN933, DIN558, DIN960, DIN961, DIN558, ISO4014
    Size: 1/4”-3”, M5-M64
    Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass
    Grade: SAE J429 Gr.2, 5,8; ASTM A307Gr.A, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9
    Thread: M, UNC, UNF
    Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, H.D.G., Zinc-nickel alloy
  • Website:

    www.jm-industry.com
  • Trade Term & Payment

    Trade Term:
    FOB/CIF/CFR/CNF/EXW/DDU/DDP
    Payment :
    T/T, L/C , D/A , D/P , Western Union,etc
  • Packaging Details:

    a. bulk in cartons (<=25kg )+ 36CTN/wood solid Pallet
    b. bulk in cartons 9"x9"x5" (<=18kg )+ 48CTN/wood solid Pallet
    c. according to customer special demand
  • Supply Ability & MOQ:

    1000 tons per month
    MinimumOrder:
    500kgs for each specification
  • Market:

    South&north Amrica/Europe/East&South east Asia/ Australia and ect.
socket head cap screw hex head cap screw
ANSI/ASME standard DIN standard

Who We are?

  • Shanghai Jian & Mei Industry and Trade Co., Ltd. is well equipped with various multi-station cold heading machines and high-medium frequency heating machines imported from Taiwan. JM can manufacture all kinds of fasteners of various head types with the specifications from M6- M56,1/4-2”in diameter, 20-1500 (1”-60”) in length, from Class 4.8 to 12.9 and from A429 Grade 2-8.



Quality control

  • The production management of our company strictly complies with ISO9001:2008 system. All our products are subjected to strict test and inspection in each process by the workers periodically, starting from the raw materials delivered to the factory.


Test Report


Each batch of exported products are identified with a unique batch number in the Finished product testing report and steel mill raw material quality inspection report.




  • If you need, the test report form the third part is available


hex head bolt hex cap screw
Nominal Size or Basic Product Diameter E F G H R LT Y Circular Runout of BearingSurface FIM
Body Diameter Width Across Flats Width Across Corners Head Height Wrenching height Thread Length for Bolt Lengths Transition Thread Length
6 in.and Shorter Over 6 in.
Max Min Basic Max Min Max Min Basic Max Min Min Nom Nom Max Max
1/4 0.2500 0.2500 0.2450 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 0.106 0.750 1.000 0.250 0.010
5/16 0.3125 0.3125 0.3065 1/2 0.500 0.489 0.577 0.557 13/64 0.211 0.195 0.140 0.875 1.125 0.278 0.011
3/8 0.3750 0.3750 0.369C 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 0.160 1.000 1.250 0.312 0.012
7/16 0.4375 0.4375 0.4305 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 0.195 1.125 1.375 0.357 0.013
1/2 0.5000 0.5000 0.4930 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 0.215 1.250 1.500 0.385 0.014
9/16 0.5625 0.5625 0.5545 13/16 0.812 0.798 0.938 0.910 23/64 0.371 0.118 0.250 1.375 1.625 0.417 0.015
5/8 0.6250 0.6250 0.6170 15/16 0.938 0.922 1.083 1.051 25/ll 0.403 0.378 0.269 1.500 1.750 0.455 0.017
3/4 0.7500 0.7500 0.7410 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 0.324 1.750 2.000 0.500 0.020
7/8 0.8750 0.8750 0.8660 1-5/16 1.312 1.285 1.516 1.465 35/ll 0.563 0.531 0.378 2.000 2.250 0.556 0.023
1 1.0000 1.0000 0.9900 1-1/2 1.500 1.469 1.732 1.675 39/64 0.627 0.591 0.416 2.250 2.500 0.625 0.026
1-1/8 1.1250 1.1250 1.1140 1-11/16 1.688 1.631 1.949 1.859 11/16 0.718 0.658 0.461 2.500 2.750 0.714 0.029
1-1/4 1.2500 1.2500 1.2390 1-7/8 1.875 1.812 2.165 2.066 25/32 0.813 0.749 0.530 2.750 3.000 0.714 0.033
1 -3/8 1.3750 1.3750 1.3630 2-1/16 2.062 1.994 2.382 2.273 27/32 0.878 0.810 0.569 3.000 3.250 0.833 0.036
1-1/2 1.5000 1.5000 1.4880 2-1/4 2.250 2.175 2.598 2.480 1-5/16 0.974 0.902 0.640 3.250 3.500 0.833 0.039
1 -3/4 1.7500 1.7500 1.7380 2-5/8 2.625 2.538 3.031 2.893 1-3/32 1.134 1.054 0.748 3.750 4.000 1.000 0.046
2 2.0000 2.0000 1.9880 3 3.000 2.900 3.411 3.306 1-7/32 1.263 1.175 0.825 4.250 4.500 1.111 0.052
2-1/4 2.2500 2.2500 2.2380 3-3/8 3.375 3.262 3.897 3.719 1-3/8 1.423 1.327 0.933 5.000 1.111 0.059
2-1/2 2.5000 2.5000 2.4880 3-3/4 3.750 3.625 4.330 4.133 1-17/32 1.583 1.479 1.042 5.500 1.250 0.065
2-3/4 2.7500 2.7500 2.7380 4-1/8 4.125 3.988 4.763 4.116 1-11/16 1.744 1.632 1.151 6.000 1.250 0.072
3 3.0000 3.0000 2.9880 4-1/2 4.500 4.350 5.196 4.959 1-7/8 1.935 1.815 1.290 6.500 1.250 0.079
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