PartsTable TECHNICAL DATA SHEET

NSN 3940-01-421-3691Government record, cited

Sling, Endless3940-01-421-3691

NSN 3940-01-421-3691 · NIIN 014213691

FSC 3940 — Blocks, Tackle, Rigging, and Slings · FSG 39 — Materials Handling Equipment

Government record, cited

Also searched as 3940-01-421-3691 · 3940014213691 · NIIN 014213691 · 01-421-3691 · FSC 3940 Blocks, Tackle, Rigging, and Slings · 1135E48 FIND NO 21 · 525C884-H01 · 525C884-H01

Nearby stock numbers ← 3940-01-421-3688 Adapter, Hoisting · 3940-01-421-6948 Tongs, Material Lifting →

Features

Sling,endless — FSC 3940
Design Type: WIRE ROPE
Inside Circumference: 21.416 FEET NOMINAL FT
Surface Treatment: ZINC
Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
Size Designation: 0.18 IN. 7X19 EXTRA FLEX IN

Identification

NSN: 3940-01-421-3691
NIIN: 014213691
FSC: 3940 — Blocks, Tackle, Rigging, and Slings
FSG: 39 — Materials Handling Equipment

General Description

The Sling,endless, cataloged under National Stock Number 3940-01-421-3691, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3940-01-421-3691
Item Name	Sling,endless
FSC / FSG	3940 / 39 — Blocks, Tackle, Rigging, and Slings
Status	ACTIVE
Design Type	WIRE ROPE
Inside Circumference	21.416 FEET NOMINAL FT
Surface Treatment	ZINC
Material	STEEL LOCATION NOT OTHERWISE SPECIFIED
Size Designation	0.18 IN. 7X19 EXTRA FLEX 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

Cross-Reference Index

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

Reference documents

Reference	Meaning
1135E48 FIND NO 21	5/2 Secondary reference U.S. Government activity
525C884-H01	C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation
525C884-H01	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 3940 — Blocks, Tackle, Rigging, and Slings

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

3940-00-000-0169

3940-00-000-0169 · Item name not on file

3940-00-003-0706

BLOCK-WD12IN SNATCH

3940-00-004-3568

3940-00-004-3568 · Item name not on file

3940-00-004-9175

SLING,PALLET

3940-00-005-1366

3940-00-005-1366 · Item name not on file

3940-00-005-1367

3940-00-005-1367 · Item name not on file

3940-00-006-3256

3940-00-006-3256 · Item name not on file

3940-00-007-2801

ADAPTER,HOISTING

Frequently Asked Questions

What is NSN 3940-01-421-3691?

NSN 3940-01-421-3691 is a Sling,endless, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.

What are the specifications of 3940-01-421-3691?

Key specifications for 3940-01-421-3691: Design Type: WIRE ROPE; Inside Circumference: 21.416 FEET NOMINAL FT; Special Features: WIRE TO MIL-W-83420 COMPOSITION A; BREAKING STRENGTH 4200 LBS. LBS; Surface Treatment: ZINC. 5 specifications are documented in the U.S. Government catalog.

Is NSN 3940-01-421-3691 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.

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