Manufacturing
Marketing Partner
T J Davies, Co., Inc.
Since 1965 the T.J. Davies Company has been manufacturing retention knobs (pull studs) for direct sale and distribution. Their retention knobs are manufactured in the United States from steel drawn in the United States. T.J. Davies Company is a veteran-founded, woman-led business dedicated to consistently manufacturing high-quality products that help our customers compete globally.
Mailing Address:
11823 State Route 44
Mantua, OH 44255
United States of America
Tel: 440.248.5510
Email: sales@tjdavies.com
Website: https://tjdavies.com/
Company Category: Supply Chain
Company Sector: Manufacturing
Keywords: Retention Knobs, Pull Studs, Sockets
Partner Status: Marketing Partner
Products
T.J. Davies' Retention Knobs
Our retention knobs are manufactured above international standards or to machine builder specifications. Retention knobs are manufactured utilizing AMS-6274/AISI-8620 alloy steel drawn in the United States. Threads are single-pointed on our lathes while manufacturing all other retention knob features to ensure high concentricity. Our process ensures that our threads are balanced (lead in/lead out at 180 degrees.) Each retention knob is carburized (hardened) to 58-62HRC, and case depth is .020-.030. Core hardness 40HRC. Each retention knob is coated utilizing a hot black oxide coating to military specifications. Our retention knobs are 100% covered in black oxide to prevent rust. All retention knob surfaces (not just mating surfaces) have a precision finish of 32 RMA micro or better: ISO grade 6N. Each retention knob is magnetic particle tested and tested at 2.5 times the pulling force of the drawbar. Certifications are maintained for each step in the manufacturing process for traceability.
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