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Technical Data Sheet
PartsTable / COMPONENT / M45938/4-8
M45938/4-8 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The M45938/4-8 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-081-8534, 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
M45938/4-8
NSN: 5310-01-081-8534
FSC: 5310
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
Part NumberM45938/4-8
NSN5310-01-081-8534
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45938/4-8 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: CLEANED,DESCALED AND PASSIVATE IAW ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A581/A581M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SPECIFICATION/STANDARD DATA: 80205-NAS-45938/4 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 4 ITEM
•
NUT STYLE: CLINCH
•
NUT HEIGHT: 0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONCLEANED,DESCALED AND PASSIVATE IAW ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A581/A581M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPECIFICATION/STANDARD DATA80205-NAS-45938/4 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NONDEFINITIVE SPEC/STD DATA4 ITEM
NUT STYLECLINCH
NUT HEIGHT0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.164 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
W8322Interchangeable
interchangeable cross-reference
interchangeable
6090658-1Interchangeable
interchangeable cross-reference
interchangeable
8322Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-1/1634Interchangeable
interchangeable cross-reference
interchangeable
MILE1-1634Interchangeable
interchangeable cross-reference
interchangeable
CMP832-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M45938/4-8?
M45938/4-8 is a M45938/4-8.
What parts can replace M45938/4-8?
There are 24 known substitutes for M45938/4-8: W8322, 6090658-1, 8322 and 21 more. Substitute compatibility should be verified for your specific system.
Is M45938/4-8 still available?
M45938/4-8 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