PartsTable
Technical Data Sheet

MIL-N-45938/9 — NUT,SELF-LOCKING,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MIL-N-45938/9: NUT,SELF-LOCKING,CLINCH.

The NUT,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: CLINCH, nut_height: 0.415 INCHES NOMINAL IN, pilot_length: 0.189 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-800-9554, 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
MIL-N-45938/9
NSN: 5310-00-800-9554
NIINs: 008009554, 012984837, 013387330, 013951391, 014633960
FSC: 5310 — Nuts and Washers
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleCLINCH
nut_height0.415 INCHES NOMINAL IN
pilot_length0.189 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
pilot_diameter0.273 INCHES MINIMUM AND 0.277 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
nominal_thread_size0.190 INCHES IN
NSN5310-00-800-9554
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MIL-N-45938/9 · 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: SOLUBLE LUBRICANT
•
WIDTH ACROSS FLATS: 0.375 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693 MIL SPEC 1ST MATERIAL RESPONSE LOCKING INSERT
•
NUT COUNTERBORE DEPTH: 0.135 INCHES NOMINAL NUT IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
LUBRICATIONSOLUBLE LUBRICANT
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
THREAD SERIESUNF
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693 MIL SPEC 1ST MATERIAL RESPONSE LOCKING INSERT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5640 ASSN STD 2ND MATERIAL RESPONSE NUT
NUT COUNTERBORE DEPTH0.135 INCHES NOMINAL NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
COUNTERBORE DIAMETER0.220 INCHES NOMINAL NUT IN
SUBSTITUTES & CROSS-REFERENCES 7
M45938/9-21Reference document
Same NSN cross-reference
Reference document — Secondary reference
709-5343974 PC9Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
9175033Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
69805F34Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
60-07-6379Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
69805F3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MIL-N-45938/9?
MIL-N-45938/9 is a NUT,SELF-LOCKING,CLINCH.
What parts can replace MIL-N-45938/9?
There are 7 known substitutes for MIL-N-45938/9: M45938/9-21, 709-5343974 PC9, 9175033 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-N-45938/9?
MIL-N-45938/9 is cataloged in the U.S. Government catalog under NSN 5310-00-800-9554. 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.