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DY812 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

DY812: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 440C OVERALL, nut_style: HEXAGON, nut_height: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-903-5966, 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
DY812
NSN: 5310-00-903-5966
FSC: 5310 — Nuts and Washers
CAGE: 29964 — ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 440C OVERALL
nut_styleHEXAGON
nut_height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
end_item_identificationMRAP - COUGAR AMBULANCE; RG-33 AUV; MRAP BUFFALO MK2A2; MRAP - COUGAR TOW; MRAP - COUGAR SABR/TOW; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
thread_quantity_per_inch20
NSN5310-00-903-5966
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DY812 · 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: 0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI 303 OR SAE 30303 FED STD 1ST MATERIAL RESPONSE OR FED STD 66,AISI 304 OR SAE 30304 FED STD 2ND MATERIAL RESPONSE OR AISI 14140C FED STD 3RD MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT HEIGHT: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI 303 OR SAE 30303 FED STD 1ST MATERIAL RESPONSE OR FED STD 66,AISI 304 OR SAE 30304 FED STD 2ND MATERIAL RESPONSE OR AISI 14140C FED STD 3RD MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
NUT HEIGHT0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
NUT STYLEHEXAGON
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 9
333-12000Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
245-4510949-51Reference document
Same NSN cross-reference
Reference document — Secondary reference
M171-119Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
24419Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
147238-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
11293-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DY812?
DY812 is a NUT,PLAIN,HEXAGON.
What parts can replace DY812?
There are 9 known substitutes for DY812: 333-12000, 245-4510949-51, M171-119 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DY812?
DY812 is cataloged in the U.S. Government catalog under NSN 5310-00-903-5966. This indicates validated use in U.S. government and defense supply chains.
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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.