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PR561-40 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PR561-40: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: SQUARE, thread_length: 0.156 INCHES NOMINAL IN, fastener_length: 0.156 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_item_identification: 1240-01-533-1854. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-533-7417, 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
PR561-40
NSN: 5305-01-533-7417
FSC: 5305 — Screws
CAGE: 31TY2 — SCHMIDT & BENDER INCORPORATED (USA)
SPECIFICATIONS
head_styleSQUARE
thread_length0.156 INCHES NOMINAL IN
fastener_length0.156 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identification1240-01-533-1854
NSN5305-01-533-7417
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PR561-40 · 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
•
FASTENER LENGTH: 0.156 INCHES NOMINAL IN
•
THREAD LENGTH: 0.156 INCHES NOMINAL IN
•
HEAD STYLE: SQUARE
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.156 INCHES NOMINAL IN
THREAD LENGTH0.156 INCHES NOMINAL IN
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
END ITEM IDENTIFICATION1240-01-533-1854
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PR561-40?
PR561-40 is a SCREW,MACHINE.
What is the NSN for PR561-40?
PR561-40 is cataloged in the U.S. Government catalog under NSN 5305-01-533-7417. 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.