PartsTable
Technical Data Sheet
MILB857TYPEA ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: HEXAGON, nut_height: 0.180 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND, surface_treatment: PASSIVATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8439, 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
MILB857TYPEA
NSN: 5310-00-021-8439
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 317 OR STEEL COMP 347 OVERALL
nut_styleHEXAGON
nut_height0.180 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_size0.312 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
thread_quantity_per_inch24
NSN5310-00-021-8439
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MILB857TYPEA · 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
NUT STYLE: HEXAGON
THREAD DIRECTION: RIGHT-HAND
THREAD QUANTITY PER INCH: 14
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE: 0.438 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATA: A TYPE
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH14
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.438 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
101026PC725Interchangeable
interchangeable cross-reference
interchangeable
2048BInterchangeable
interchangeable cross-reference
interchangeable
118230PC725Interchangeable
interchangeable cross-reference
interchangeable
P5076Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MILB857TYPEA?
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 MILB857TYPEA?
MILB857TYPEA is a NUT,PLAIN,HEXAGON.
What parts can replace MILB857TYPEA?
There are 4 known substitutes for MILB857TYPEA: 101026PC725, 2048B, 118230PC725 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB857TYPEA?
MILB857TYPEA is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8439. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MILB857TYPEA