PartsTable TECHNICAL DATA SHEET

NSN 3040-01-102-7655Government record, cited

Worm Shaft3040-01-102-7655

NSN 3040-01-102-7655 · NIIN 011027655

FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment

Government record, cited

Also searched as 3040-01-102-7655 · 3040011027655 · NIIN 011027655 · 01-102-7655 · FSC 3040 Miscellaneous Power Transmission Equipment · 2640-617 · 845-2068554 PIE · 2640-617 PIECE 16 · 845-2068554 PIECE 16 · 845-2068554

Nearby stock numbers ← 3040-01-102-7653 Control Assembly, Push-Pull · 3040-01-102-7656 Worm Shaft →

Features

Worm Shaft — FSC 3040
Shaft Location: BOTH ENDS OF WORM
Worm Thread Lead: 0.5125 INCHES NOMINAL IN
Material Document and Classification: QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE
Worm Pitch Diameter: 1.638 INCHES NOMINAL IN
Worm Outside Diameter: 1.940 INCHES NOMINAL IN
End Similarity: NOT IDENTICAL
Worm Helix Angle: 10 DEG,34 MIN

Identification

NSN: 3040-01-102-7655
NIIN: 011027655
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Worm Shaft, cataloged under National Stock Number 3040-01-102-7655, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3040-01-102-7655
Item Name	Worm Shaft
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Status	ACTIVE
Shaft Location	BOTH ENDS OF WORM
Worm Thread Lead	0.5125 INCHES NOMINAL IN
Material Document and Classification	QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE
Worm Pitch Diameter	1.638 INCHES NOMINAL IN
Worm Outside Diameter	1.940 INCHES NOMINAL IN
End Similarity	NOT IDENTICAL
Worm Helix Angle	10 DEG,34 MIN
Material	NICKEL ALLOY 400
Worm Thread Quantity	2
Worm Thread Direction	RIGHT-HAND
Worm Pressure Angle in Deg	20.000
Worm Body Tapered Bearing Surface End	NOT PROVIDED

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL Q — CCL Item — Commerce Control List
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 7

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4820-01-113-19152640-617-3 POSSIBLE MATCH

CAP,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-113-78942640-617 ASSY E POSSIBLE MATCH

OPERATOR,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

3020-01-149-79072640-617 PIECE 4 AND 16 POSSIBLE MATCH

GEAR SECTOR,WORM WHEEL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

3020-01-170-97972640-617 POSSIBLE MATCH

GEAR SET,WORM AND WORM WHEEL,MAT

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-197-49432640-617 ASSEMBLY G POSSIBLE MATCH

GEAR OPERATOR,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-208-31342640-617 ASSY BB POSSIBLE MATCH

OPERATOR,VALVE,MANUAL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-485-31182640-617 ASSY.FF POSSIBLE MATCH

GEAR OPERATOR,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
2640-617	D/9 Drawing number reference only U.S. Government activity
845-2068554 PIE	C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command
2640-617 PIECE 16	3/2 Design control — primary reference U.S. Government activity
845-2068554 PIECE 16	3/2 Design control — primary reference U.S. Government activity
845-2068554	D/9 Drawing number reference only U.S. Government activity
845-2068554 ITE	C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command

Related Parts

4820-01-113-1915POSSIBLE MATCH

CAP,VALVE

2640-617-3

4820-01-113-7894POSSIBLE MATCH

OPERATOR,VALVE

2640-617 ASSY E

3020-01-149-7907POSSIBLE MATCH

GEAR SECTOR,WORM WHEEL

2640-617 PIECE 4 AND 16

3020-01-170-9797POSSIBLE MATCH

GEAR SET,WORM AND WORM WHEEL,MAT

2640-617

4820-01-197-4943POSSIBLE MATCH

GEAR OPERATOR,VALVE

2640-617 ASSEMBLY G

4820-01-208-3134POSSIBLE MATCH

OPERATOR,VALVE,MANUAL

2640-617 ASSY BB

4820-01-485-3118POSSIBLE MATCH

GEAR OPERATOR,VALVE

2640-617 ASSY.FF

Frequently Asked Questions

What is NSN 3040-01-102-7655?

NSN 3040-01-102-7655 is a Worm Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What NSN replaces 3040-01-102-7655?

7 possible matches (shared part number, not a government interchangeability claim): 4820-01-113-1915, 4820-01-113-7894, 3020-01-149-7907. Verify interchangeability with system specifications before substitution.

What are the specifications of 3040-01-102-7655?

Key specifications for 3040-01-102-7655: Shaft Location: BOTH ENDS OF WORM; Worm Thread Lead: 0.5125 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE; Worm Pitch Diameter: 1.638 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-102-7655 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

What is the DEMIL code for NSN 3040-01-102-7655?

NSN 3040-01-102-7655 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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