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Technical Data Sheet
PartsTable / COMPONENT / 938.08.21.103
938.08.21.103 ✓ 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 938.08.21.103 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-1286, 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
938.08.21.103
NSN: 5310-00-167-1286
FSC: 5310
CAGE: S4080 — PILATUS AIRCRAFT LTD (CHE)
SPECIFICATIONS
Part Number938.08.21.103
NSN5310-00-167-1286
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 938.08.21.103 · 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
•
NUT STYLE: CASTELLATED, HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 24
•
THREAD CLASS: 3B
•
NUT HEIGHT: 0.312 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES: UNF
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLECASTELLATED, HEXAGON
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH24
THREAD CLASS3B
NUT HEIGHT0.312 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL OVERALL
THREAD SERIESUNF
NOMINAL THREAD SIZE0.312 INCHES IN
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
404102Interchangeable
interchangeable cross-reference
interchangeable
LS9365-517-4-8Interchangeable
interchangeable cross-reference
interchangeable
AN310-5Interchangeable
interchangeable cross-reference
interchangeable
221002Interchangeable
interchangeable cross-reference
interchangeable
221002-1Interchangeable
interchangeable cross-reference
interchangeable
B7773-250Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 938.08.21.103?
938.08.21.103 is a 938.08.21.103.
What parts can replace 938.08.21.103?
There are 15 known substitutes for 938.08.21.103: 404102, LS9365-517-4-8, AN310-5 and 12 more. Substitute compatibility should be verified for your specific system.
Is 938.08.21.103 still available?
938.08.21.103 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