PartsTable
Technical Data Sheet
Download PDF

MA 12740-82BC — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MA 12740-82BC: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: PLATE, nut_height: 0.250 INCHES MAXIMUM IN, nut_length: 0.486 INCHES MAXIMUM IN, plate_width: 0.235 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, temp_rating: 800.0 FAHRENHEIT NOMINAL DEGF. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-479-9162, 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
MA 12740-82BC
NSN: 5310-00-479-9162
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_stylePLATE
nut_height0.250 INCHES MAXIMUM IN
nut_length0.486 INCHES MAXIMUM IN
plate_width0.235 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
temp_rating800.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.047 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-00-479-9162
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MA 12740-82BC · 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
•
PLATE THICKNESS: 0.047 INCHES MAXIMUM IN
•
NUT LENGTH: 0.486 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
PRECIOUS MATERIAL: SILVER
•
PLATE WIDTH: 0.235 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
•
TEMP RATING: 800.0 FAHRENHEIT NOMINAL DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.047 INCHES MAXIMUM IN
NUT LENGTH0.486 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
PRECIOUS MATERIALSILVER
PLATE WIDTH0.235 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
TEMP RATING800.0 FAHRENHEIT NOMINAL DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
HARDNESS RATING49.0 ROCKWELL C MAXIMUM
MOUNTING HOLE COUNTERSINK ANGLE98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM
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 7
R300C08KSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M12740-82BCSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MK4031-08BCSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
10419616Reference document
Same NSN cross-reference
Reference document — Informative reference only
LHTA575M2860-82BCReference document
Same NSN cross-reference
Reference document — Secondary reference
MS21087-08KReference 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
Ready to buy MA 12740-82BC?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MA 12740-82BC?
MA 12740-82BC is a NUT,SELF-LOCKING,PLATE.
What parts can replace MA 12740-82BC?
There are 7 known substitutes for MA 12740-82BC: R300C08K, M12740-82BC, MK4031-08BC and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MA 12740-82BC?
MA 12740-82BC is cataloged in the U.S. Government catalog under NSN 5310-00-479-9162. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MA 12740-82BC

✓ 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.