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10121281 — TRANSFORMER,POWER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10121281: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: GANG CHANNEL, SELF LOCKING, base_width: 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN, body_width: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN, nut_height: 0.233 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN, nut_length: 0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-285-9764, 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
10121281
NSN: 5310-00-285-9764
NIINs: 002859764, 008234765
FSC: 5310 — Nuts and Washers
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleGANG CHANNEL, SELF LOCKING
base_width0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
body_width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
nut_height0.233 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN
nut_length0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
body_height3.423 INCHES MINIMUM AND 3.453 INCHES MAXIMUM IN
body_length3.235 INCHES MINIMUM AND 3.265 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
NSN5310-00-285-9764
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121281 · 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
•
NUT LENGTH: 0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT COUNTERBORE DEPTH: 0.100 INCHES MINIMUM NUT IN
•
BASE WIDTH: 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
NUT LENGTH0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH0.100 INCHES MINIMUM NUT IN
BASE WIDTH0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
SPECIFICATION/STANDARD DATA76301-ST3-445 MANUFACTURERS STANDARD
SUBSTITUTES & CROSS-REFERENCES 6
F49249-3-3XNReference document
Same NSN cross-reference
Reference document — Secondary reference
G18421-2-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
ST3M445C3M2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
F49249E3-2XNSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3929AS1222-C3M2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
G18421L2-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10121281?
10121281 is a TRANSFORMER,POWER.
What parts can replace 10121281?
There are 6 known substitutes for 10121281: F49249-3-3XN, G18421-2-3, ST3M445C3M2 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10121281?
10121281 is cataloged in the U.S. Government catalog under NSN 5310-00-285-9764. 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.