PB Fasteners

PB Fasteners is a PCC Fasteners company in Gardena, California, specializing in airframe structural nuts and bolts. It was founded by Paul R. Briles, and its page marks the 50 year anniversary of the business in 2017. It works from a single building of more than 95,000 square feet.

Products

• Taper-Lok integrated fastening system, an interference fit system using a tapered, conical-shank fastener in a precision tapered hole to enhance fatigue life; the company says it has been in service for more than 40 years, from the B-52 and C-130 to the A380
• SLEEVbolt fastening system, a two piece assembly of tapered bolt and flanged sleeve for interference fit and hole fill in composite structure; the company says it has accumulated over 100 million flight hours and is used on aircraft including the F-22, F/A-18, C-17, B-1, B-2, 787, 747 and 767
• Structural bolts, including clevis bolts and eye bolts, and a complete line of MS and NAS standard bolts and nuts
• Fuse pins (breakaway safety bolts) for engine and landing gear attachments, plus screws and nuts built to print

Materials and processes

• Materials include 8740, H11 and PH13-8Mo steels, Ti 6Al-4V, Inconel 718, A-286, PH17-4Mo and MP35N and MP159 multiphase alloys
• Sizes from 4-40 thread to over four inches in diameter
• In-house hot and cold heading, thread rolling, machining, grinding, heat treating and plating (cadmium, nickel cadmium and passivation)
• Nadcap non-destructive testing (MT and PT)

Testing

• One shear tester rated up to 1,200,000 lbs
• Five fatigue machines rated up to 200,000 lbs dynamic loading
• Three tensile and shear testers rated up to 500,000 lbs
• Stress durability and hydrogen embrittlement testing, hardness testing and hydrogen determination for titanium fasteners

Company facts

• Part of PCC Fasteners, a Precision Castparts company
• Founded by Paul R. Briles
• The company invites enquiries about special fasteners and fastener design problems