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PWA81871-15 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PWA81871-15: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, head_height: 0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.250 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN, thread_length: 0.319 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-439-4161, 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
PWA81871-15
NSN: 5305-01-439-4161
FSC: 5305 — Screws
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBUTTON
head_height0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.250 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
thread_length0.319 INCHES MAXIMUM IN
fastener_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
internal_drive_styleTORX
spline_major_diameter0.111 INCHES NOMINAL IN
nominal_thread_diameter0.138 INCHES IN
NSN5305-01-439-4161
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PWA81871-15 · 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
•
HEAD HEIGHT: 0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
THREAD LENGTH: 0.319 INCHES MAXIMUM IN
•
SPLINE MAJOR DIAMETER: 0.111 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
•
COLOR: BLACK OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
FASTENER LENGTH0.375 INCHES NOMINAL IN
THREAD LENGTH0.319 INCHES MAXIMUM IN
SPLINE MAJOR DIAMETER0.111 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
COLORBLACK OVERALL
SURFACE TREATMENTOXIDE OVERALL
INTERNAL DRIVE STYLETORX
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
91275A146Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PWA81871-15?
PWA81871-15 is a SCREW,CAP,SOCKET HEAD.
What parts can replace PWA81871-15?
There is 1 known substitute for PWA81871-15: 91275A146. Substitute compatibility should be verified for your specific system.
What is the NSN for PWA81871-15?
PWA81871-15 is cataloged in the U.S. Government catalog under NSN 5305-01-439-4161. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.