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REFERENCE IMAGE
EMANON PART NO.
NAS1154-16
NAS1154-16 is a screw 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, cadmium overall and chromate overall finish, 0.250 INCHES diameter and 1-21/64 length.
Screw
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH1.328 in (1-21/64)
THREAD LENGTH0.291–0.341 in
GRIP0.990–1.010 in
GRIP DIAMETER0.2485–0.2495 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADFlat countersunk
MATERIAL & FINISH
MATERIALSteel 4140/e4340/6150/8735 +1
MATERIAL SPECMIL-S-5626 or MIL-S-5000 or MIL-S-8503 or MIL-S-6098 or MIL-S-6049
FINISHCadmium and chromate
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5305-00-449-2438
GOVERNING STANDARD80205-NAS1154
FLIS · NSN 5305-00-449-2438 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Fastener Length: 1-21/64", Thread: 1/4-28, Thread Length: 21/64"
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.