NSN 3040-01-490-7450 · NIIN 014907450 · Part number 124-7120998 PC 18
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-490-7450 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-490-7450. Manufacturer of record part number: 124-7120998 PC 18.
Also searched as3040-01-490-7450 ·
3040014907450 ·
NIIN 014907450 ·
01-490-7450 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 124-7120998 PC 18 · 124-7120998
Material Document and Classification: MIL-S-22698 MIL SPEC SINGLE MATERIAL RESPONSE
Surface Treatment: ZINC
Material: STEEL
Body Thickness: 0.875 INCHES NOMINAL IN
Identification
NSN: 3040-01-490-7450
NIIN: 014907450
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 124-7120998 PC 18
Manufacturer: Naval Sea Systems Command
General Description
The Connecting Link,rigid, cataloged under National Stock Number 3040-01-490-7450, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
3040-01-490-7450
Primary Part Number
124-7120998 PC 18
Item Name
Connecting Link,rigid
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Body Construction
SOLID
Link Style
STRAIGHT
Body Width
2.000 INCHES NOMINAL IN
Material Document and Classification
MIL-S-22698 MIL SPEC SINGLE MATERIAL RESPONSE
Surface Treatment
ZINC
Material
STEEL
Body Thickness
0.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-01-491-4638124-7120998 PC 9-83POSSIBLE MATCH
SEAT,HELICAL COMPRESSION SPRING
Possible match (shared part number)Naval Sea Systems Command
5340-01-491-4641124-7120998 PC 9-82POSSIBLE MATCH
SEAT,HELICAL COMPRESSION SPRING
Possible match (shared part number)Naval Sea Systems Command
4010-01-491-5060POSSIBLE MATCH
ROPE,WIRE
Possible match (shared part number)
5340-01-491-6939124-7120998POSSIBLE MATCH
RETAINER,HELICAL COMPRESSION SPR
Possible match (shared part number)Naval Sea Systems Command
5365-01-491-9536124-7120998 PC 8-94POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-491-9559124-7120998 PC 9-94POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-491-9574124-7120998 PC 8-88POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-491-9592124-7120998 PC 8-80POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
NSN 3040-01-490-7450 is a Connecting Link,rigid, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-01-490-7450?
NSN 3040-01-490-7450 has 1 manufacturer part number on file: 124-7120998 PC 18 (Naval Sea Systems Command).
What NSN replaces 3040-01-490-7450?
8 possible matches (shared part number, not a government interchangeability claim): 5340-01-491-4638, 5340-01-491-4641, 4010-01-491-5060. Verify interchangeability with system specifications before substitution.
What are the specifications of 124-7120998 PC 18?
Key specifications for 124-7120998 PC 18: Body Construction: SOLID; Link Style: STRAIGHT; Body Width: 2.000 INCHES NOMINAL IN; Material Document and Classification: MIL-S-22698 MIL SPEC SINGLE MATERIAL RESPONSE. 7 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-490-7450 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.
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.