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REFERENCE IMAGE
EMANON PART NO.
NAS1104-28D
NAS1104-28D is a bolt in steel comp 4140 overall or steel comp e4340 overall or steel comp 6150 overall or steel comp 8735 overall or steel comp 8740 overall or steel comp 4037 overall, cadmium overall and chromate overall finish, 0.250 INCHES diameter and 2-1/16 length.
Bolt
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH2.063 in (2-1/16)
THREAD LENGTHMinimum 0.316 in
GRIPNominal 1.750 in
GRIP DIAMETER0.2485–0.2495 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADDished hexagon
HEAD HEIGHTNominal 0.125 in
WIDTH ACROSS FLATS0.430–0.439 in
MATERIAL & FINISH
MATERIALSteel comp 4140 overall or steel comp e4340 overall or steel comp 6150 overall or steel comp 8735 overall or steel comp 8740 overall or steel comp 4037 overall
MATERIAL SPECMIL-S-5626 — MIL SPEC · MIL-S-5000 — MIL SPEC · MIL-S-8503 — MIL SPEC · MIL-S-6098 — MIL SPEC · MIL-S-6049 — MIL SPEC · MIL-S-8695 — MIL SPEC
FINISHCadmium overall and chromate overall
FINISH SPECQQ-P-416,TY 2,CL 3
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5306-00-834-5290
FLIS · NSN 5306-00-834-5290 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Fastener Length: 2-1/16", Thread: 1/4-28, Thread Length: 5/16"
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.