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Technical Data Sheet
PartsTable / COMPONENT / NAS51-100
NAS51-100 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1074, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 0.915 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN, major_thickness: 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-530-7968, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
NAS51-100
NSN: 5325-00-530-7968
FSC: 5325
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 1074
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter0.915 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
major_thickness0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5120 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-530-7968
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS51-100 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
5100100Interchangeable
interchangeable cross-reference
interchangeable
CV34S1601-364375PC296Interchangeable
interchangeable cross-reference
interchangeable
51-100Interchangeable
interchangeable cross-reference
interchangeable
51X100Interchangeable
interchangeable cross-reference
interchangeable
NAS51-100Interchangeable
interchangeable cross-reference
interchangeable
117889Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS51-100?
NAS51-100 is a RING,RETAINING.
What parts can replace NAS51-100?
There are 24 known substitutes for NAS51-100: 5100100, CV34S1601-364375PC296, 51-100 and 21 more. Substitute compatibility should be verified for your specific system.
Is NAS51-100 still available?
NAS51-100 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026