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TLN10020D3-7 — NUT,SELF-LOCKING,ASSEMBLED WASHE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

TLN10020D3-7: NUT,SELF-LOCKING,ASSEMBLED WASHE.

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: PLAIN DISHED, nut_height: 0.326 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-007-4878, 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
TLN10020D3-7
NSN: 5310-01-007-4878
FSC: 5310 — Nuts and Washers
CAGE: 17446 — HUCK INTERNATIONAL, INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_stylePLAIN DISHED
nut_height0.326 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.383 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
nominal_thread_size0.438 INCHES IN
counterbore_diameter0.475 INCHES MINIMUM AND 0.484 INCHES MAXIMUM NUT IN
NSN5310-01-007-4878
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: TLN10020D3-7 · 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: 0.760 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
THREAD PITCH DIAMETERS: +0.4050 TO 0.4091 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT COUNTERBORE DEPTH: 0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM NUT IN
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT0.383 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.760 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD PITCH DIAMETERS+0.4050 TO 0.4091 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.438 INCHES IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 3
TLN1002CD3-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
HW49660-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M426C7MSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 TLN10020D3-7?
TLN10020D3-7 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.
What parts can replace TLN10020D3-7?
There are 3 known substitutes for TLN10020D3-7: TLN1002CD3-7, HW49660-7, ST3M426C7M. Substitute compatibility should be verified for your specific system.
What is the NSN for TLN10020D3-7?
TLN10020D3-7 is cataloged in the U.S. Government catalog under NSN 5310-01-007-4878. 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.