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EMANON PART NO.

NAS6604H4

NAS6604H4 is a bolt in steel, cadmium and chromate finish, 0.250 INCHES diameter and Between 0.660 inches and 0.690 inches length.

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NAS6604H4 — reference imageREFERENCE IMAGE

Reference image — representative of the type, not the exact part; verify dimensions per specification.

SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.660–0.690 in
THREAD LENGTH0.400–0.450 in
GRIP0.240–0.260 in
GRIP DIAMETER0.2485–0.2495 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADHexagon
HEAD HEIGHT0.125–0.140 in
WIDTH ACROSS FLATS0.429–0.439 in
MATERIAL & FINISH
MATERIALSteel
MATERIAL SPECMIL-S-5000 or MIL-S-6049 or AMS6322
FINISHCadmium and chromate
FINISH SPECQQ-P-416,TYPE 2,CLASS 2
MECHANICAL
TENSILE STRENGTH160,000 psi
STANDARDS & TRACEABILITY
NSN5306-01-200-5733
GOVERNING STANDARD80205-NAS6604
FLIS · NSN 5306-01-200-5733 · retrieved 2026-08-07
DOCUMENTS
Certificate of Conformance — included with every order
No drawing on file — request it
length: 0.675", grip: 0.250", thread: 1/4-28, hex head, drilled head, tension, long thread, cadmium plated alloy steel, NAS6604 series bolt
Emanon is a stocking distributor — quality-system certifications are held by the certified manufacturers we source from, not by Emanon. Every shipment carries manufacturer certifications and full lot traceability.

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NAS6604H4 — Bolt | Emanon Aircraft Fasteners