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Technical Data Sheet
MILB857ATYPE1STYLEAGRADE2 ✓ Verified by PartsTable
· BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 3A NUT THREAD A, thread_length: 0.500 INCHES MINIMUM NUT THREAD IN, overall_length: 1.125 INCHES NOMINAL IN, hardness_rating: 100.0 ROCKWELL B NOMINAL, thread_direction: RIGHT-HAND STUD THREAD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-254-0779, 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
MILB857ATYPE1STYLEAGRADE2
NSN: 5307-00-254-0779
FSC: 5307
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
thread_class3A NUT THREAD A
thread_length0.500 INCHES MINIMUM NUT THREAD IN
overall_length1.125 INCHES NOMINAL IN
hardness_rating100.0 ROCKWELL B NOMINAL
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES NUT THREAD IN
thread_quantity_per_inch28 NUT THREAD
thread_series_designatorUNF NUT THREAD
nondefinitive_spec/std_data1 TYPE AND A STYLE AND 2 GRADE
NSN5307-00-254-0779
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MILB857ATYPE1STYLEAGRADE2 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
THREAD SERIES DESIGNATOR: UNF NUT THREAD
MATERIAL: STEEL
SURFACE TREATMENT: CADMIUM OVERALL
NOMINAL THREAD SIZE: 0.250 INCHES NUT THREAD IN
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND A STYLE AND 2 GRADE
THREAD CLASS: 3A NUT THREAD A
THREAD QUANTITY PER INCH: 28 NUT THREAD
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF NUT THREAD
MATERIALSTEEL
SURFACE TREATMENTCADMIUM OVERALL
NOMINAL THREAD SIZE0.250 INCHES NUT THREAD IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A STYLE AND 2 GRADE
THREAD CLASS3A NUT THREAD A
THREAD QUANTITY PER INCH28 NUT THREAD
THREAD QUANTITY PER INCH20 STUD THREAD
THREAD DIRECTIONRIGHT-HAND STUD THREAD
OVERALL LENGTH1.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
3606 BInterchangeable
interchangeable cross-reference
interchangeable
6606Interchangeable
interchangeable cross-reference
interchangeable
1132874G7Interchangeable
interchangeable cross-reference
interchangeable
V6606Interchangeable
interchangeable cross-reference
interchangeable
SMD96986Interchangeable
interchangeable cross-reference
interchangeable
9016Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILB857ATYPE1STYLEAGRADE2?
MILB857ATYPE1STYLEAGRADE2 is a STUD,PLAIN.
What parts can replace MILB857ATYPE1STYLEAGRADE2?
There are 11 known substitutes for MILB857ATYPE1STYLEAGRADE2: 3606 B, 6606, 1132874G7 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB857ATYPE1STYLEAGRADE2?
MILB857ATYPE1STYLEAGRADE2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-254-0779. This indicates validated use in U.S. government and defense supply chains.
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