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38105-9 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

38105-9: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 0.268 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, special_features: SERRATED WASHER FACE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-081-9497, 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
38105-9
NSN: 5310-01-081-9497
FSC: 5310 — Nuts and Washers
CAGE: 21585 — FARR CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height0.268 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
special_featuresSERRATED WASHER FACE
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_size0.312 INCHES IN
washer_outside_diameter0.641 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
thread_quantity_per_inch18
NSN5310-01-081-9497
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 38105-9 · 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
•
WASHER OUTSIDE DIAMETER: 0.641 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.268 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.641 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
SPECIAL FEATURESSERRATED WASHER FACE
SURFACE TREATMENTCADMIUM OVERALL
NUT STYLEHEXAGON
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 1
7FR12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 38105-9?
38105-9 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What parts can replace 38105-9?
There is 1 known substitute for 38105-9: 7FR12. Substitute compatibility should be verified for your specific system.
What is the NSN for 38105-9?
38105-9 is cataloged in the U.S. Government catalog under NSN 5310-01-081-9497. This indicates validated use in U.S. government and defense supply chains.
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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.