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EMANON PART NO.

NAS623-4-13

NAS623-4-13 is a screw in 0.250 INCHES diameter and 1.113 inches minimum and 1.143 inches maximum length.

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Screw
NAS623-4-13 — reference imageREFERENCE IMAGE

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

SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH1.113–1.143 in
THREAD LENGTH0.291–0.341 in
GRIP0.812
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADPan
HEAD HEIGHT0.162–0.175 in
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5305-00-244-2880
GOVERNING STANDARD80205-NAS623
FLIS · NSN 5305-00-244-2880 · retrieved 2026-08-09
DOCUMENTS
Certificate of Conformance — included with every order
No drawing on file — request it
length: 1.128", grip: 0.812", thread: 1/4-28, pan head machine screw, short thread, philips recess, 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.

RELATED SIZES IN THIS SERIES

NAS623-4-13 — Screw | Emanon Aircraft Fasteners