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BH00450-12 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BH00450-12: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 8630 OR STEEL COMP 4037 OR STEEL COMP 8740 OVERALL, nut_style: DOUBLE 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 5310-01-033-1599, 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
BH00450-12
NSN: 5310-01-033-1599
FSC: 5310 — Nuts and Washers
CAGE: 27238 — BRISTOL INDUSTRIES, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 8630 OR STEEL COMP 4037 OR STEEL COMP 8740 OVERALL
nut_styleDOUBLE HEXAGON
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.750 INCHES MAXIMUM IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.094 INCHES MINIMUM IN
surface_treatmentCADMIUM OVERALL
NSN5310-01-033-1599
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BH00450-12 · 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: 1.230 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT0.750 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER1.230 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
WASHER THICKNESS0.094 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6280 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE OR SMS 6322 ASSN STD 3RD MATERIAL RESPONSE OVERALL
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
MC624-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
EB-13202-20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
3051G63-006Reference 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
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FREQUENTLY ASKED QUESTIONS
What is BH00450-12?
BH00450-12 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace BH00450-12?
There are 3 known substitutes for BH00450-12: MC624-12, EB-13202-20, 3051G63-006. Substitute compatibility should be verified for your specific system.
What is the NSN for BH00450-12?
BH00450-12 is cataloged in the U.S. Government catalog under NSN 5310-01-033-1599. 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.