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Industries · Aerospace & Defense

Traceable to the heat, every time.

Heat-traceable fasteners with full chain-of-custody documentation.

Airframe assembly, engine build-up, satellite structures, and defense platforms run on hardware that can be traced from the flight line back to the melt. We stock the grades, hold the certs, and ship the paperwork that clears receiving inspection on the first pass.

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Airframe · Engine · Space · Defense

Rocket launch for defense and space programs

Industry Overview

The paperwork flies with the part.

In aerospace, a fastener without a traceable pedigree is scrap. Receiving inspection wants the Certificate of Conformance, the chemical and physical test reports, the DFARS melt origin, and a heat-lot number that matches every box — before the hardware ever reaches the floor.

We supply heat-segregated, fully-traceable fasteners with full chain-of-custody: NAS, MS, and AN hardware, A286 and titanium bolts, and pin-and-collar fastening systems — each lot documented and segregated so the trace never breaks.

Fasteners engineered for aerospace and defense.

05 · Core product lines

NAS / MS / AN Hardware

Standard aerospace bolts, screws, and nuts to National Aerospace and Military Standards.

A286 & Titanium Bolts

High-strength, heat- and corrosion-resistant fasteners for airframe and engine structure.

Hi-Lok & Lockbolt Systems

Pin-and-collar fastening systems for primary and secondary airframe structure.

Inconel 718 Fasteners

Superalloy bolting for hot-section, exhaust, and high-temperature engine assemblies.

Full Traceability Lots

5. Full Traceability Lots — Heat-segregated documentation, DFARS melt origin, and C of C with every shipment.

Shop by Product

Fastener lines most used in Aerospace & Defense.

Custom Products

Built to your print

Stud Bolts & Rod

A286, Ti, B7 · cut to length

Stainless Steel Fasteners

304, 316, duplex

Industrial Fasteners

A193, Gr 5/8, heavy hex

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Case Studies

Aerospace fasteners at work.

Case 01

West Coast airframe build, zero-defect receiving.

Problem

A West Coast airframe builder was losing line hours to fastener lots held at receiving for incomplete or mismatched paperwork from a previous supplier.

Solution

We moved the program to controlled lots with Certificate of Conformance, chemical and physical test reports, and DFARS melt origin pre-matched to each heat, segregated and barcoded by part number.

Results

Receiving holds dropped to zero across a full year of releases. The line stopped budgeting time for fastener paperwork rework.

“For the first time, the certs matched the boxes every single time. Receiving stopped being a bottleneck.”

— Quality Manager, West Coast airframe builder

Case 02

Custom wing-strut bolt program.

Problem

An electric aviation program needed 15-5 PH custom wing-strut shoulder bolts in small lots, each heat-segregated with full traceability and tight dimensional tolerances.

Solution

We CNC-machined the bolts on our in-house Haas live-tool lathe, kept each lot heat-segregated, and shipped with documentation packages matched to the program's traveler.

Results

Every lot cleared incoming inspection on first submittal. The program ran through ground-test article close-out without a fastener-related deviation.

“Heat-segregated small lots with complete paper is exactly what airframe work needs and rarely gets.”

— Integration Engineer, electric aviation program

Specification Library

ASTM · SAE · ANSI · ISO

GRADEDESCRIPTIONPDF

A193 B7Alloy steel bolting, high-temp→

A193 B8M316 stainless bolting→

A325Structural bolts, heavy hex→

F1554 55Anchor bolts, 55 ksi yield→

F593Stainless cap screws→

B18.2.1Square & hex bolts dim.→

SAE J429Mech. properties — Grade 5/8→

ISO 898-1Carbon/alloy metric properties→

Resources

Visit our Specification Library.

A comprehensive resource for fastener specifications across the various industries we service. These guides offer access to a wide array of specifications, standards, and technical resources.

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Why California Fastener

Why California Fastener for aerospace and defense.

Aerospace is a documentation discipline wearing a fastener disguise. We run aerospace-grade traceability: lots controlled and segregated by heat, DFARS-compliant domestic melt, and certs indexed back to the mill so the trace never breaks between the foundry and the flight line. Decades of West Coast quality work means the paperwork is as airworthy as the part.

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Let’s build it together.

Airframe, engine, space, or defense program? Send us the spec list and quality requirements. We'll match the grades, keep the heats segregated, and ship the certs, test reports, and DFARS documentation that clears receiving on the first pass.

Request a quote