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PartsTable / COMPONENT / 280451PC28
280451PC28 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.875 INCHES MAXIMUM IN, screw_material: STEEL COMP 303 OR STEEL COMP 305, 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 5305-00-271-2065, 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
280451PC28
NSN: 5305-00-271-2065
FSC: 5305
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
thread_class2A A
thread_length0.875 INCHES MAXIMUM IN
screw_materialSTEEL COMP 303 OR STEEL COMP 305
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
internal_drive_styleSLOT
nominal_thread_diameter0.312 INCHES IN
screw_surface_treatmentPASSIVATE
thread_quantity_per_inch18
NSN5305-00-271-2065
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 280451PC28 · 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: 0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
THREAD CLASS: 2A A
•
THREAD LENGTH: 0.875 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: SLOT
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
THREAD CLASS2A A
THREAD LENGTH0.875 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLESLOT
SCREW SURFACE TREATMENTPASSIVATE
THREAD QUANTITY PER INCH18
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
3-4APC7Interchangeable
interchangeable cross-reference
interchangeable
3-4WPC7Interchangeable
interchangeable cross-reference
interchangeable
118-32ALT2PC4Interchangeable
interchangeable cross-reference
interchangeable
FF-S-92 TY I STY 10SInterchangeable
interchangeable cross-reference
interchangeable
280451PC9Interchangeable
interchangeable cross-reference
interchangeable
FFS85TYPE1STYLE10SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 280451PC28?
280451PC28 is a SCREW,MACHINE.
What parts can replace 280451PC28?
There are 13 known substitutes for 280451PC28: 3-4APC7, 3-4WPC7, 118-32ALT2PC4 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 280451PC28?
280451PC28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-271-2065. 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