2643-825-91 — PACKING NUT

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

2643-825-91: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, slot_width: 0.260 INCHES NOMINAL IN, thread_size: 2.875-16, thread_class: 3A A, thread_length: 2.875 INCHES NOMINAL IN, overall_length: 0.656 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-476-3856, 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

2643-825-91

NSN: 4810-01-476-3856
NIINs: 014763856, 014763889, 014764166, 017237342, 017357427
FSC: 4810 — Valves, Powered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)

SPECIFICATIONS

material	COPPER ALLOY
slot_width	0.260 INCHES NOMINAL IN
thread_size	2.875-16
thread_class	3A A
thread_length	2.875 INCHES NOMINAL IN
overall_length	0.656 INCHES NOMINAL IN
style_designator	ROUND SLOTTED, EXTERNAL THREAD, BOSS
thread_direction	RIGHT-HAND
hole_or_slot_quantity	1
screw_thread_location	EXTERNAL
end_item_identification	NAVY EQUIPMENT
smallest_inside_diameter	2.250 INCHES MINIMUM AND 2.252 INCHES MAXIMUM IN
NSN	4810-01-476-3856

COMPONENT DIAGRAM

SUBSTITUTES & CROSS-REFERENCES 4

2640-801X03 PC 14Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

7286651Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

2643-825-91 ITEM 13Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

845-4558782 ITEMSame 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 2643-825-91?

2643-825-91 is a PACKING NUT.

What parts can replace 2643-825-91?

There are 4 known substitutes for 2643-825-91: 2640-801X03 PC 14, 7286651, 2643-825-91 ITEM 13 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 2643-825-91?

2643-825-91 is cataloged in the U.S. Government catalog under NSN 4810-01-476-3856. This indicates validated use in U.S. government and defense supply chains.

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2643-825-91 — PACKING NUT

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