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91831A003 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91831A003: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 2A A, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-494-2013, 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
91831A003
NSN: 5310-01-494-2013
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class2A A
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size0.086 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch56
NSN5310-01-494-2013
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91831A003 · 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
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.086 INCHES IN
•
NUT HEIGHT: 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.086 INCHES IN
NUT HEIGHT0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS2A A
THREAD QUANTITY PER INCH56
MATERIALSTEEL CORROSION RESISTING OVERALL EXCEPT INSERT
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 1
10-52934-01Same 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 91831A003?
91831A003 is a NUT,PLAIN,HEXAGON.
What parts can replace 91831A003?
There is 1 known substitute for 91831A003: 10-52934-01. Substitute compatibility should be verified for your specific system.
What is the NSN for 91831A003?
91831A003 is cataloged in the U.S. Government catalog under NSN 5310-01-494-2013. This indicates validated use in U.S. government and defense supply chains.
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