Coupling, Clamp, Grooved5340-01-721-3537

NSN 5340-01-721-3537 · NIIN 017213537 · Part number F3-8640190

Certified Stainless Service, Inc. Dba West-Mark Div West-Mark · FSC 5340 — Hardware, Commercial · FSG 53 — Hardware and Abrasives · CAGE 880W5

Government record, cited

NSN 5340-01-721-3537 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-721-3537. Manufacturer of record part number: F3-8640190.

Also searched as 5340-01-721-3537 · 5340017213537 · NIIN 017213537 · 01-721-3537 · FSC 5340 Hardware, Commercial · CAGE 880W5 · F3-8640190

Nearby stock numbers ← 5340-01-721-3523 Hinge, Butt · 5340-01-721-3552 Strap, Webbing →

Features

Coupling,clamp,grooved — FSC 5340
Band Width: 2.130 INCHES NOMINAL IN
Shape: ROUND
Cross-Sectional Shape Style: GROOVED RETAINER
Inside Diameter: 4.440 INCHES NOMINAL IN
Nut Type: PLAIN HEXAGON
Latch Style: DOUBLE
1 manufacturer part number on file

Identification

NSN: 5340-01-721-3537
NIIN: 017213537
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives
Primary part number: F3-8640190
Manufacturer: Certified Stainless Service, Inc. Dba West-Mark Div West-Mark

General Description

The Coupling,clamp,grooved, cataloged under National Stock Number 5340-01-721-3537, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Certified Stainless Service, Inc. Dba West-Mark Div West-Mark. Government technical data includes 6 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. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	5340-01-721-3537
Primary Part Number	F3-8640190
Item Name	Coupling,clamp,grooved
FSC / FSG	5340 / 53 — Hardware, Commercial
Manufacturer	Certified Stainless Service, Inc. Dba West-Mark Div West-Mark
Status	ACTIVE
Band Width	2.130 INCHES NOMINAL IN
Shape	ROUND
Cross-Sectional Shape Style	GROOVED RETAINER
Inside Diameter	4.440 INCHES NOMINAL IN
Nut Type	PLAIN HEXAGON
Latch Style	DOUBLE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X
Unit of Issue	EA

Cross-Reference Index

Part Number	Manufacturer
F3-8640190 PRIMARY	Certified Stainless Service, Inc. Dba West-Mark Div West-Mark (USA)

No interchangeability data on file.

Other items in FSC 5340 — Hardware, Commercial

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

5340-00-000-0068

COVER,ACCESS

5340-00-000-0132

SEAT,HELICAL COMPRESSION SPRING

5340-00-000-8150

5340-00-000-8150 · Item name not on file

5340-00-001-1251

5340-00-001-1251 · Item name not on file

5340-00-001-1264

STRAP,WEBBING

5340-00-001-1265

STRAP,WEBBING

5340-00-001-1266

STRAP,WEBBING

5340-00-001-1275

HANDLE,DOOR

Frequently Asked Questions

What is NSN 5340-01-721-3537?

NSN 5340-01-721-3537 is a Coupling,clamp,grooved, manufactured by Certified Stainless Service, Inc. Dba West-Mark Div West-Mark, classified under FSC 5340, Hardware, Commercial. Status: active.

What part numbers are listed for NSN 5340-01-721-3537?

NSN 5340-01-721-3537 has 1 manufacturer part number on file: F3-8640190 (Certified Stainless Service, Inc. Dba West-Mark Div West-Mark).

What are the specifications of F3-8640190?

Key specifications for F3-8640190: Band Width: 2.130 INCHES NOMINAL IN; Shape: ROUND; Cross-Sectional Shape Style: GROOVED RETAINER; Inside Diameter: 4.440 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5340-01-721-3537 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). 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.

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