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Technical Data Sheet
PartsTable / COMPONENT / 2155639-1
2155639-1 ✓ 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 2155639-1 is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OR STEEL COMP 416 OVERALL, head_style: HEXAGON, grip_length: 1.000 INCHES NOMINAL IN, head_height: 0.391 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.5000 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-227-0931, 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
2155639-1
NSN: 5306-00-227-0931
FSC: 5306
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL COMP 410 OR STEEL COMP 416 OVERALL
head_styleHEXAGON
grip_length1.000 INCHES NOMINAL IN
head_height0.391 INCHES NOMINAL IN
thread_class2A A
thread_length1.5000 INCHES MAXIMUM IN
fastener_length2.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentPASSIVATE OVERALL
width_between_flats0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-227-0931
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2155639-1 · 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
•
WIDTH BETWEEN FLATS: 0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
THREAD LENGTH: 1.5000 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.391 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE
•
MATERIAL: STEEL COMP 410 OR STEEL COMP 416 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
THREAD CLASS2A A
THREAD LENGTH1.5000 INCHES MAXIMUM IN
HEAD HEIGHT0.391 INCHES NOMINAL IN
HEAD STYLEHEXAGON
FASTENER LENGTH2.500 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE
MATERIALSTEEL COMP 410 OR STEEL COMP 416 OVERALL
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
MILB857AUpgraded Successor
successor cross-reference
successor
M1222RN12C48GFNNUpgraded Successor
successor cross-reference
successor
MIL-S-1222Upgraded Successor
successor cross-reference
successor
MIL-DTL-1222Upgraded Successor
successor cross-reference
successor
306-40172Upgraded Successor
successor cross-reference
successor
1D4703Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2155639-1?
2155639-1 is a 2155639-1.
What parts can replace 2155639-1?
There are 11 known substitutes for 2155639-1: MILB857A, M1222RN12C48GFNN, MIL-S-1222 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2155639-1?
2155639-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-227-0931. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026