Valley Forge & Bolt Manufacturing Co.

Company News...

The New specification ASTM F2482-05 has been released for purchase at the ASTM website. This specification will be included in Volume 1.08 (Annual Book of ASTM Standard section one Iron and Steel Products, Fasteners, Rolling Element Bearings) in 2007.

To purchase a copy of this document from ASTM (click on the Buy button) below.

ASTM F2482

Standard Specification for Load-Indicating Externally Threaded Fasteners

This current standard covers our Maxbolt^TM and SPC4^TM Load Indicating Fasteners. ASTM F2482 has passed both the F16 Subcommittee and Main Committee. Publish date expected to be around the 1st quarter of 2006. Below is a summary of what to expect.

1. Scope

1.1 This specification covers externally threaded fasteners that are capable of indicating clamping forces up to yield strength during the tightening process and/or post installation residual tension. Load-Indicating fasteners utilize mechanical, electronic or ultrasonic means to indicate fastener tension.

1.2 These fasteners provide a means to verify the desired clamp load in critical applications, both upon initial installation as well as in service.

The load indicating fastener standard will assist engineers and technicians though out industry to accurately monitor joint tightness in critical applications. They are ideal for determining, when critical joints are losing their clamp load and allows the engineer to complete a time study on joint settlement issues. Presently there are no standards that address these types of fasteners, this leaves out many government, DOT’s, and military institutions from the benefits of this technology.

Table 1 (Grades and Classification)

Load Indicating Fastener Grade /Head Marking	Bolt diameter, in.	Min. Tensile Strength Classification	Mechanical / Chemical / Testing Requirements In accordance with:
325-1	½ to 1, incl	120,000 psi	ASTM A325 Type 1
325-1	1-1/8 to 1-½, incl	105,000 psi	ASTM A325 Type 1
325-3	½ to 1, incl	120,000 psi	ASTM A325 Type 3
325-3	1-1/8 to 1-½, incl	105,000 psi	ASTM A325 Type 3
490-1	½ to 1 ½ in., incl	150,000 psi	ASTM A490 Type 1
490-3	½ to 1 ½ in., incl	150,000 psi	ASTM A490 Type 3
449	¼ to 1, incl	120,000 psi	ASTM A449 Type 1
	1 1/8 to 1 ½, incl	105,000 psi
	1 ¾ to 3, incl	90,000
354-BC	¼ to 2 ½ , incl	125,000 psi	ASTM A354 Grade BC
354-BC	2 ½ to 7, incl	115,000 psi	ASTM A354 Grade BC
354-BD	¼ to 2 ½ , incl	150,000 psi	ASTM A354 Grade BD
	2 ½ to 7, incl	140,000 psi	ASTM A354 Grade BD
193B7	¼ to 2-1/2, incl	125,000 psi	ASTM A193 B7
	2 ½ to 4, incl	115,000 psi
	4 to 7, incl	100,000 psi
193B7M	¼” to 4, incl	100,000 psi	ASTM A193 B7M
193B7M	4 to 7, incl	100,000 psi	ASTM A193 B7M
193B5	¼ to 4, incl	100,000 psi	ASTM A193 B5
193B6	¼ to 4, incl	110,000 psi	ASTM A193 B6
193B16	¼ to 2-1/2, incl	125,000 psi	ASTM A193 B16
	2 ½ to 4, incl	110,000 psi
	4 to 7, incl	100,000 psi

New Innovations
We are constantly thinking of new ideas for fastening joints. Check back with us frequently for new products and Innovations.

Quality Control
We believe in continual improvement of our manufacturing process. We have been recently approved by the Department of Defense for class II and class III fasteners.