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10271-56 — SCREW,MACHINE

✓ Government record, cited
3M · BOLT SCREW
PRODUCT OVERVIEW

10271-56: SCREW,MACHINE.

The SCREW,MACHINE is a 3M industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.187 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.375 INCHES NOMINAL IN, thread_length: 0.281 INCHES MINIMUM IN, screw_material: STEEL CORROSION RESISTING. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-855-1218, 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
10271-56
NSN: 5305-00-855-1218
FSC: 5305 — Screws
CAGE: 20284 — AIMTRON SYSTEMS, LLC (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.187 INCHES NOMINAL IN
thread_class2A A
head_diameter0.375 INCHES NOMINAL IN
thread_length0.281 INCHES MINIMUM IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.656 INCHES NOMINAL IN
special_featuresHEAD KNURLED
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
NSN5305-00-855-1218
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 10271-56 · 3M ⚠ 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: 0.187 INCHES NOMINAL IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.656 INCHES NOMINAL IN
•
THREAD LENGTH: 0.281 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.187 INCHES NOMINAL IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.656 INCHES NOMINAL IN
THREAD LENGTH0.281 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL CORROSION RESISTING
SPECIAL FEATURESHEAD KNURLED
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES 1
51-18-108-24Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10271-56?
10271-56 is a SCREW,MACHINE manufactured by 3M.
What parts can replace 10271-56?
There is 1 known substitute for 10271-56: 51-18-108-24. Substitute compatibility should be verified for your specific system.
What is the NSN for 10271-56?
10271-56 is cataloged in the U.S. Government catalog under NSN 5305-00-855-1218. 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.