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SME9925-7 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SME9925-7: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: SLOTTED HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-118-9138, 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
SME9925-7
NSN: 5310-01-118-9138
FSC: 5310 — Nuts and Washers
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleSLOTTED HEXAGON
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.437 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.054 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
width_across_flats0.494 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
nominal_thread_size0.437 INCHES IN
NSN5310-01-118-9138
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SME9925-7 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LUBRICATION: DRY FILM LUBRICANT
•
WASHER OUTSIDE DIAMETER: 0.645 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.494 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF
•
WASHER THICKNESS: 0.054 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT0.437 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.645 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.494 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING450.0 FAHRENHEIT MAXIMUM DEGF
WASHER THICKNESS0.054 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.437 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 2
73781CM-720Reference document
Same NSN cross-reference
Reference document — Secondary reference
GN512FP7CReference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SME9925-7?
SME9925-7 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace SME9925-7?
There are 2 known substitutes for SME9925-7: 73781CM-720, GN512FP7C. Substitute compatibility should be verified for your specific system.
What is the NSN for SME9925-7?
SME9925-7 is cataloged in the U.S. Government catalog under NSN 5310-01-118-9138. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.