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Technical Data Sheet
PartsTable / COMPONENT / 201279
201279 ✓ 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 RETAINER,SPRING,COO is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, thread_class: 2A STUD THREAD A, thread_length: 0.125 INCHES MINIMUM STUD THREAD IN, overall_length: 0.500 INCHES NOMINAL IN, thread_direction: RIGHT-HAND NUT THREAD, 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 5307-00-276-2612, 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
201279
NSN: 5307-00-276-2612
FSC: 5307
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL COMP 303
thread_class2A STUD THREAD A
thread_length0.125 INCHES MINIMUM STUD THREAD IN
overall_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.164 INCHES STUD THREAD IN
thread_quantity_per_inch32 STUD THREAD
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) NUT THREAD
material_document_and_classificationASTMA582 ASSN STD SINGLE MATERIAL RESPONSE
NSN5307-00-276-2612
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 201279 · 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: UNIFIED NATIONAL COARSE (UNC) STUD THREAD
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NOMINAL THREAD SIZE: 0.164 INCHES STUD THREAD IN
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMA582 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD CLASS: 2A NUT THREAD A
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) STUD THREAD
SURFACE TREATMENTPASSIVATE OVERALL
NOMINAL THREAD SIZE0.164 INCHES STUD THREAD IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
OVERALL LENGTH0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.164 INCHES NUT THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA582 ASSN STD SINGLE MATERIAL RESPONSE
THREAD CLASS2A NUT THREAD A
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) NUT THREAD
THREAD CLASS2A STUD THREAD A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
201279Interchangeable
interchangeable cross-reference
interchangeable
HJ29201000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 201279?
201279 is a RETAINER,SPRING,COO.
What parts can replace 201279?
There are 2 known substitutes for 201279: 201279, HJ29201000. Substitute compatibility should be verified for your specific system.
What is the NSN for 201279?
201279 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-276-2612. 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