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10109286 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10109286: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: SLOTTED HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-116-1207, 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
10109286
NSN: 5310-01-116-1207
FSC: 5310 — Nuts and Washers
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleSLOTTED HEXAGON
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.173 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.020 INCHES NOMINAL IN
width_across_flats0.306 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
NSN5310-01-116-1207
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10109286 · 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
•
WASHER OUTSIDE DIAMETER: 0.420 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.306 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
•
WASHER THICKNESS: 0.020 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5737 NATIONAL SPEC ALL MATERIAL RESPONSES OR AMS5525 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT0.173 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.420 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.306 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
WASHER THICKNESS0.020 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5737 NATIONAL SPEC ALL MATERIAL RESPONSES OR AMS5525 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 7
BH788-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MC15189Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M788-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
E12589-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
SLN206-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
79318CM-428Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10109286?
10109286 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 10109286?
There are 7 known substitutes for 10109286: BH788-4, MC15189, ST3M788-4 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10109286?
10109286 is cataloged in the U.S. Government catalog under NSN 5310-01-116-1207. 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.