PartsTable
Technical Data Sheet
MILB857TYPE4STYLEA0RBGRADE1 ✓ 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 material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.297 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-221-4793, 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
MILB857TYPE4STYLEA0RBGRADE1
NSN: 5310-00-221-4793
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.297 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.788 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch20
nondefinitive_spec/std_data4 TYPE AND A STYLE OR B STYLE AND 5 GRADE
NSN5310-00-221-4793
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MILB857TYPE4STYLEA0RBGRADE1 · 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
THREAD DIRECTION: RIGHT-HAND
THREAD CLASS: 2B
WIDTH ACROSS FLATS: 0.728 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 0.438 INCHES IN
THREAD QUANTITY PER INCH: 20
THREAD SERIES: UNF
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
NUT HEIGHT: 0.234 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
WIDTH ACROSS FLATS0.728 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.438 INCHES IN
THREAD QUANTITY PER INCH20
THREAD SERIESUNF
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NUT HEIGHT0.234 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA4 TYPE AND A STYLE AND B STYLE AND 1 GRADE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
MILB857TYPE4STYLEA0RBGRADE1Interchangeable
interchangeable cross-reference
interchangeable
12Z58PC24Interchangeable
interchangeable cross-reference
interchangeable
MILB857TYPEACLASSCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MILB857TYPE4STYLEA0RBGRADE1?
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 MILB857TYPE4STYLEA0RBGRADE1?
MILB857TYPE4STYLEA0RBGRADE1 is a NUT,PLAIN,HEXAGON.
What parts can replace MILB857TYPE4STYLEA0RBGRADE1?
There are 3 known substitutes for MILB857TYPE4STYLEA0RBGRADE1: MILB857TYPE4STYLEA0RBGRADE1, 12Z58PC24, MILB857TYPEACLASSC. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB857TYPE4STYLEA0RBGRADE1?
MILB857TYPE4STYLEA0RBGRADE1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-221-4793. 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 — MILB857TYPE4STYLEA0RBGRADE1