Shoulder Bolt
Shoulder Bolt
Shoulder Bolt
Shoulder Bolt
Shoulder Bolt
Shoulder Bolt
Shoulder Bolt
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  • Description
  • Application
  • Custom Reviews


MOQ: 500kgs
  • Product Features:

    Standard: ASME B18.3,DIN
    Size: 1/4”-3”, M5-M64
    Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass
    Head type:Spline Socket head, Hexagon head, Low head hexagon socket, Flat Countersunk Head, Button head, etc
    Grade: SAE J429 Gr.5,8; Class 6.8, 8.8, 10.9, 12.9
    Thread: M, UNC, UNF
    Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G.
  • 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.
The shoulder bolt screw is also called the shoulder screw, the stop screw, the stop bolt, the brake bolt,the plug screw etc.; the plug screw is used together with the bolt pull rod, mainly used to control the fixed mold seat plate in the three-plate mold, the flow channel push plate Mold fittings for the mold opening stroke between the die and the die. Since it can be set to the parting surface of the mold, the mold design can be miniaturized. These products have high hardness, good toughness, excellent wear resistance and heat resistance. They are suitable for precision molds and can significantly improve their service life. In particular, the hot shape of precision molds has become effective control, suitable for the mold in the high temperature working environment.The shoulder bolt  constitutes the attribute material: SCM435, hardness: 33~38HRC.

Shoulder bolt installation example and precautions
1. The shaft diameter is the matching specification, and it is convenient to use the plug screw and bolt pull rod. For example, when using the D20 stop bolt, it is recommended to use the D20 bolt pull rod;
2. When the tapping screw is used for the thickness of the seat plate, the bolt head is designed to be buried into the seat plate by 2 mm.
Therefore, the relationship between the countersink depth (W) and the stroke amount (S) is:
[W=S+ plug screw shoulder thickness K+2]
L = seat plate thickness - (stop bolt shoulder thickness K + 2);
3. When the thickness of the runner is used, the thread length l of the plug screw embedded in the bolt of the bolt is set to 1.5 times the diameter of the thread.
In this state, the threaded portion of the plug screw has a margin of 8 mm, and the countersunk hole of the spring can be machined on the flow path push plate as shown in the mounting diagram.
E=(plug screw diameter M×1.5)+flow channel plate thickness
The Specifications of ANSI B18.3.3M Meteric socket head shoulder screws
 the details of shoulder bolt

Nominal diameter ds dk k s t b d P
max min max min max min min max
6. 5 6. 487 6. 451 10. 00 9. 78 4. 50 4. 32 3 2. 4 9. 75 M5 0.80
8. 0 7. 987 7. 951 13. 00 12. 73 5. 50 5. 32 4 3. 3 11. 25 M6 1.00
10. 0 9. 987 9. 951 16. 00 15. 73 7. 00 6. 78 5 4. 2 13. 25 M8 1. 25
13. 0 12. 984 12. 941 18. 00 17. 73 9.00 8. 78 6 4. 9 16. 40 M10 1.50
16. 0 15. 984 15. 941 24. 00 23. 67 11.00 10. 73 8 6. 6 18. 40 M12 1. 75
20. 0 19. 980 19. 928 30. 00 29. 67 14.00 13. 73 10 8. 8 22. 40 M16 2.00
25.0 24.98 24.928 36.00 35.61 16.00 15.73 12 10 27.40 M20 2.50
 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


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