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M71B256-4P — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

M71B256-4P: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, head_style: HEADLESS (SETSCREW), point_style: OVAL, thread_class: 2A A, thread_length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, fastener_length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-146-9488, 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
M71B256-4P
NSN: 5305-00-146-9488
FSC: 5305 — Screws
CAGE: 26233 — NYLOK LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
head_styleHEADLESS (SETSCREW)
point_styleOVAL
thread_class2A A
thread_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
fastener_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
locking_featurePELLET THREADS
thread_directionRIGHT-HAND
width_across_flats0.035 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.086 INCHES IN
thread_quantity_per_inch56
NSN5305-00-146-9488
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M71B256-4P · 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 ACROSS FLATS: 0.035 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
•
POINT STYLE: OVAL
•
LOCKING FEATURE: PELLET THREADS
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.035 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
FASTENER LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
THREAD LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.086 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLEOVAL
LOCKING FEATUREPELLET THREADS
INTERNAL DRIVE STYLEHEXAGON
THREAD CLASS2A A
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M71B256-4P?
M71B256-4P is a SETSCREW.
What is the NSN for M71B256-4P?
M71B256-4P is cataloged in the U.S. Government catalog under NSN 5305-00-146-9488. 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.