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Technical Data Sheet
PartsTable / COMPONENT / 306-12144
306-12144 ✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, head_style: HEXAGON, head_height: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.875 INCHES MAXIMUM IN, fastener_length: 0.875 INCHES NOMINAL 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 5305-01-448-4183, 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
306-12144
NSN: 5305-01-448-4183
FSC: 5305
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
head_styleHEXAGON
head_height0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
thread_class2A A
thread_length0.875 INCHES MAXIMUM IN
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-448-4183
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 306-12144 · 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
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2A A
•
MATERIAL: STEEL COMP 316 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY MATERIAL
•
THREAD QUANTITY PER INCH: 20
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
MATERIALSTEEL COMP 316 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL
THREAD QUANTITY PER INCH20
THREAD LENGTH0.875 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
330C889A4020D14Interchangeable
interchangeable cross-reference
interchangeable
5007-136Interchangeable
interchangeable cross-reference
interchangeable
1/4-20 X 7/8 HEXInterchangeable
interchangeable cross-reference
interchangeable
903337-09Interchangeable
interchangeable cross-reference
interchangeable
MS35307-307Interchangeable
interchangeable cross-reference
interchangeable
122-6602816 PC 19Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 306-12144?
306-12144 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 306-12144?
There are 9 known substitutes for 306-12144: 330C889A4020D14, 5007-136, 1/4-20 X 7/8 HEX and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 306-12144?
306-12144 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-448-4183. 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