287C720-1 — SCREW ASSEMBLY

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

287C720-1: SCREW ASSEMBLY.

The SCREW ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL, special_features: ITEM IS PART OF THE STEAM SEAL REGULATOR ASSEMBLY ONBOARD THE SSBN-726 CLASS AND VARIOUS OTHER VESSELS, end_item_identification: OHIO CLASS SSBN, criticality_code_justification: TEXT, general_characteristics_item_description: NSN IS A CRITICAL APPLICATION ITEM (CAI). This part is cataloged in the U.S.

Government catalog under NSN 2825-01-103-1360, 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

287C720-1

NSN: 2825-01-103-1360
FSC: 2825 — Steam Turbines and Components
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)

SPECIFICATIONS

material	STEEL
special_features	ITEM IS PART OF THE STEAM SEAL REGULATOR ASSEMBLY ONBOARD THE SSBN-726 CLASS AND VARIOUS OTHER VESSELS
end_item_identification	OHIO CLASS SSBN
criticality_code_justification	TEXT
general_characteristics_item_description	NSN IS A CRITICAL APPLICATION ITEM (CAI)
NSN	2825-01-103-1360

COMPONENT DIAGRAM

KEY FEATURES

•

GENERAL CHARACTERISTICS ITEM DESCRIPTION: NSN IS A CRITICAL APPLICATION ITEM (CAI)

•

SPECIAL TEST FEATURES: THE SCREW MATERIAL SHALL BE AS SPECIFIED IN ASTM A108, GRADE 121, COLD DRAWN; THE CHECK NUT MATERIAL SHALL BE AS SPECIFIED IN MIL-S-1222, TYPE I, GRADE 2, STYLE B; THE FLAT HEAD RIVET MATERIAL SHALL BE AS SPECIFIED IN DOD-F-24669/1, GRADE DESIGNATION 1010; MATERIAL FURNISHED SHALL CONTAIN NO MERCURY OR MERCURY COMPOUND AND SHALL BE FREE OF MERCURY CONTAMINATION

•

SUPPLEMENTARY FEATURES: TOLERANCES SHALL BE AS FOLLOWS: FRACTIONAL TOLERANCE SHALL BE + OR - 1/64"; ANGULAR TOLERANCE SHALL BE + OR - 1 DEGREE; THE THREAD SERIES DESIGNATION FOR THE SCREW SHALL BE 1/2 - 13UNC-2A; THE THREAD SERIES DESIGNATION FOR THE CHECK NUT SHALL BE 1/2 - 13UNC - 2B A

•

CRITICALITY CODE JUSTIFICATION: TEXT

•

MATERIAL: STEEL

TECHNICAL CHARACTERISTICS

GENERAL CHARACTERISTICS ITEM DESCRIPTION	NSN IS A CRITICAL APPLICATION ITEM (CAI)
SPECIAL TEST FEATURES	THE SCREW MATERIAL SHALL BE AS SPECIFIED IN ASTM A108, GRADE 121, COLD DRAWN; THE CHECK NUT MATERIAL SHALL BE AS SPECIFIED IN MIL-S-1222, TYPE I, GRADE 2, STYLE B; THE FLAT HEAD RIVET MATERIAL SHALL BE AS SPECIFIED IN DOD-F-24669/1, GRADE DESIGNATION 1010; MATERIAL FURNISHED SHALL CONTAIN NO MERCURY OR MERCURY COMPOUND AND SHALL BE FREE OF MERCURY CONTAMINATION
SUPPLEMENTARY FEATURES	TOLERANCES SHALL BE AS FOLLOWS: FRACTIONAL TOLERANCE SHALL BE + OR - 1/64"; ANGULAR TOLERANCE SHALL BE + OR - 1 DEGREE; THE THREAD SERIES DESIGNATION FOR THE SCREW SHALL BE 1/2 - 13UNC-2A; THE THREAD SERIES DESIGNATION FOR THE CHECK NUT SHALL BE 1/2 - 13UNC - 2B A
CRITICALITY CODE JUSTIFICATION	TEXT
SPECIAL FEATURES	ITEM IS PART OF THE STEAM SEAL REGULATOR ASSEMBLY ONBOARD THE SSBN-726 CLASS AND VARIOUS OTHER VESSELS
END ITEM IDENTIFICATION	OHIO CLASS SSBN
MATERIAL	STEEL

OTHER ITEMS IN FSC 2825 — Steam Turbines and Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2825-00-001-8040 2825-00-001-8041 2825-00-001-8042 2825-00-001-8043 2825-00-001-8044 2825-00-003-0377 2825-00-003-8649 2825-00-004-9102

SUBSTITUTES & CROSS-REFERENCES 5

287C720Reference document

Same NSN cross-reference

Reference document — Secondary reference

287C720-001Reference document

Same NSN cross-reference

Reference document — Secondary reference

7378E65P24Reference document

Same NSN cross-reference

Reference document — Secondary reference

3178082Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

287C720P1Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 287C720-1?

287C720-1 is a SCREW ASSEMBLY.

What parts can replace 287C720-1?

There are 5 known substitutes for 287C720-1: 287C720, 287C720-001, 7378E65P24 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 287C720-1?

287C720-1 is cataloged in the U.S. Government catalog under NSN 2825-01-103-1360. This indicates validated use in U.S. government and defense supply chains.

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