FAQs

Yes

Yes

Yes

We stock socket head cap screws in 410 stainless in 3 basic tempers:

1. Low hardness RC 22 max in compliance with NACE MR0175

2. Medium Hardness in compliance with ASTM A193 Grade B6

3. High Hardness for high Strength applications

Yes

Yes

Yes. View our ISO certificate here.

Ask your salesperson – whenever possible we say yes!

Yes – but please ask when order is placed. We maintain 100% trace-ability on every fastener we sell. Test reports are typically available and we strive to continually improve in this area. All test reports are maintained digitally and your salesperson will have access to them

1. We stock a handful of fasteners with BSF, Whitworth and BS threads.

2. We are capable of manufacturing fasteners with BSF, Whitworth and BS threads.

System 22 can produce fasteners with a yield strength up to 110,000 PSI yield strength in conformance with NACE MR0175.

• Generally for corrosion resistance 600 series Inconel is specified for fasteners. This includes fasteners in Inconel 600, Inconel 601 and Inconel 625.

• For high strength and high temperature applications Inconel 718 fasteners are typically preferred. These may be manufactured.

• Inconel 718 fasteners may also be produced in compliance with NACE MR0175 when higher strength and better corrosion resistance is required.

System 22 can produce virtually any type of grooved pins of the following types:

1. ASTM / Inch Standards

   1. Type 1

   2. Type 2A

   3. Type 24

   4. Type 3H

   5. Type 5

   6. Type 67

   7. Type A

   8. Type A3

   9. Type B

   10. Type C

   11. Type D

   12. Type E

   13. Type F

   14. Type G

   15. Type H

   16. Type U

2. DIN Standards

   1. DIN 1469

   2. DIN 1470

   3. DIN 1471

   4. DIN 1472

   5. DIN 1474

   6. DIN 1476

3. ISO Standards

   1. ISO 2345 (with undercut)

   2. ISO 8739 (full length with pilot)

   3. ISO 8740 (full length)

   4. ISO 8741 (half-length reverse taper)

   5. ISO 8742 (one third-length center)

   6. ISO 8743 (half-length center)

   7. ISO 8744 (full length tapered)

   8. ISO 8745 (half-length taper)

   9. ISO 8746 (Round Head)

   10. ISO 8747 (Countersunk Head)

   11. http://rkengineeringco.com/grooved_pins.htm

   12. YOUR CUSTOM GROOVED PIN

1. System 22 can produce grooved pins in the following materials:

   1. Steel

   2. 303 stainless

• 304 stainless

1. 316 stainless

2. 410 stainless

3. Monel

• K-Monel

• Inconel

1. Bronze

2. Copper

3. 4140 alloy steel

• Almost any material

System 22 is a variable pitch gaging method required for the proper inspection of many fasteners and is a great tool for statistical process control. The term System 22 is found in ASME B1.3M.