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1640-12 — CLUTCH HALF,POSITIVE,NONVEHICULA

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

1640-12: CLUTCH HALF,POSITIVE,NONVEHICULA.

CLUTCH HALF,POSITIVE,NONVEHICULA. Key specifications include style_designator: SLIDING JAW, end_item_identification: HYDRAULIC CABLE WICH, part_name_assigned_by_controlling_agency: CLUTCH, DOG. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-540-2778, 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
1640-12
NSN: 4720-00-540-2778
NIINs: 005402778, 016592262
FSC: 4720 — Hose and Flexible Tubing
CAGE: 82126 — MARE ISLAND NAVAL SHIPYARD (USA)
SPECIFICATIONS
style_designatorSLIDING JAW
end_item_identificationHYDRAULIC CABLE WICH
part_name_assigned_by_controlling_agencyCLUTCH, DOG
NSN4720-00-540-2778
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1640-12 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 7
241/S258-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5P7760Reference document
Same NSN cross-reference
Reference document — Secondary reference
231-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
241-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
9X2390Reference document
Same NSN cross-reference
Reference document — Secondary reference
329-9933Same 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 1640-12?
1640-12 is a CLUTCH HALF,POSITIVE,NONVEHICULA.
What parts can replace 1640-12?
There are 7 known substitutes for 1640-12: 241/S258-12, 5P7760, 231-12 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1640-12?
1640-12 is cataloged in the U.S. Government catalog under NSN 4720-00-540-2778. This indicates validated use in U.S. government and defense supply chains.
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