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Technical Data Sheet
PartsTable / COMPONENT / 12279036
12279036 ✓ 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,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: UNDERCUT HEXAGON, head_height: 0.156 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.157 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-079-3055, 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
12279036
NSN: 5305-01-079-3055
FSC: 5305
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleUNDERCUT HEXAGON
head_height0.156 INCHES NOMINAL IN
thread_class2A A
thread_length0.157 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.438 INCHES NOMINAL IN
shoulder_length0.250 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.187 INCHES NOMINAL FIRST SHOULDER IN
width_between_flats0.312 INCHES NOMINAL IN
internal_drive_styleSLOT
NSN5305-01-079-3055
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12279036 · 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)
•
FASTENER LENGTH: 0.438 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.312 INCHES NOMINAL IN
•
HEAD STYLE: UNDERCUT HEXAGON
•
THREAD CLASS: 2A A
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
SHOULDER DIAMETER: 0.187 INCHES NOMINAL FIRST SHOULDER IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH0.438 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.312 INCHES NOMINAL IN
HEAD STYLEUNDERCUT HEXAGON
THREAD CLASS2A A
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER DIAMETER0.187 INCHES NOMINAL FIRST SHOULDER IN
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.164 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
27511Interchangeable
interchangeable cross-reference
interchangeable
27511-JInterchangeable
interchangeable cross-reference
interchangeable
4317Interchangeable
IBM 8.5GB 10k Disk Scsi-U2 80p 3.5in
interchangeable
Y4307Interchangeable
interchangeable cross-reference
interchangeable
4004317Interchangeable
interchangeable cross-reference
interchangeable
4317LInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12279036?
12279036 is a SCREW,SHOULDER.
What parts can replace 12279036?
There are 18 known substitutes for 12279036: 27511, 27511-J, 4317 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12279036?
12279036 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-079-3055. 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