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7918561 — PINION,DISCONNECT S

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7918561: PINION,DISCONNECT S.

The PINION,DISCONNECT S is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FILLISTER, head_height: 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN, point_style: DOG, point_length: 0.047 INCHES NOMINAL IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-722-9688, 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
7918561
NSN: 5305-00-722-9688
NIINs: 007229688, 008628535
FSC: 5305 — Screws
CAGE: 99974 — DELCO ELECTRONICS CORP DELCO SYSTEMS OPNS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFILLISTER
head_height0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
point_styleDOG
point_length0.047 INCHES NOMINAL IN
thread_class3A A
head_diameter0.178 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
thread_length0.328 INCHES MINIMUM IN
point_diameter0.043 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
fastener_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
NSN5305-00-722-9688
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7918561 · 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
•
POINT DIAMETER: 0.043 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
•
POINT LENGTH: 0.047 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
THREAD LENGTH: 0.328 INCHES MINIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
TECHNICAL CHARACTERISTICS
POINT DIAMETER0.043 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
HEAD HEIGHT0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
POINT LENGTH0.047 INCHES NOMINAL IN
FASTENER LENGTH0.375 INCHES NOMINAL IN
THREAD LENGTH0.328 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 4
7958561Reference document
Same NSN cross-reference
Reference document — Secondary reference
26512-34Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2651-34Reference document
Same NSN cross-reference
Reference document — Secondary reference
1037-027Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 7918561?
7918561 is a PINION,DISCONNECT S.
What parts can replace 7918561?
There are 4 known substitutes for 7918561: 7958561, 26512-34, 2651-34 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7918561?
7918561 is cataloged in the U.S. Government catalog under NSN 5305-00-722-9688. 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.