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EMANON PART NO.
NAS6204-21D
NAS6204-21D is a bolt in steel overall, cadmium overall finish, 0.250 INCHES diameter and 1.667 inches minimum and 1.697 inches maximum length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHMinimum 1.667 in; maximum 1.697 in
THREAD LENGTHNominal 0.370 in
GRIPMinimum 1.302 in; maximum 1.322 in
GRIP DIAMETER0.2445–0.2450 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADDished hexagon
HEAD HEIGHTMinimum 0.125 in; maximum 0.140 in
WIDTH ACROSS FLATS0.429–0.439 in
MATERIAL & FINISH
MATERIALSteel overall
MATERIAL SPECMIL-S-5000 — MIL SPEC · MIL-S-6049 — MIL SPEC · AMS6322 — ASSN STD
FINISHCadmium overall
FINISH SPECQQ-P-416,TYPE II,CLASS 2
MECHANICAL
TENSILE STRENGTH180,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5306-01-245-4068
FLIS · NSN 5306-01-245-4068 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
length: 1.682", grip: 1.312", thread: 1/4-28, hex head, drilled shank, tension, short thread, cadmium plated alloy steel
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.