PartsTable TECHNICAL DATA SHEET

NSN 4030-01-366-5571Government record, cited

Shackle4030-01-366-5571

NSN 4030-01-366-5571 · NIIN 013665571

FSC 4030 — Fittings for Rope, Cable, and Chain · FSG 40 — Rope, Cable, Chain, and Fittings

Government record, cited

Also searched as 4030-01-366-5571 · 4030013665571 · NIIN 013665571 · 01-366-5571 · FSC 4030 Fittings for Rope, Cable, and Chain · RR-C-271 · F271-A42-B222 · RR-C-271D TY4B CL2 D1 3/8IN

Nearby stock numbers ← 4030-01-366-5570 Shackle · 4030-01-366-5572 Shackle →

Features

Shackle — FSC 4030
Inside Length: 4.438 INCHES NOMINAL IN
Material Diameter: 1.375 INCHES NOMINAL IN
Style Designator: CHAIN
Opening Width: 2.250 INCHES NOMINAL IN
Eyelet Style: ROUND PLAIN
Eye Inside Diameter: 1.625 INCHES NOMINAL IN
Material: STEEL

Identification

NSN: 4030-01-366-5571
NIIN: 013665571
FSC: 4030 — Fittings for Rope, Cable, and Chain
FSG: 40 — Rope, Cable, Chain, and Fittings

General Description

The Shackle, cataloged under National Stock Number 4030-01-366-5571, is classified within Federal Supply Class 4030 (Fittings for Rope, Cable, and Chain) of the Rope, Cable, Chain, and Fittings group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4030-01-366-5571
Item Name	Shackle
FSC / FSG	4030 / 40 — Fittings for Rope, Cable, and Chain
Status	ACTIVE
Inside Length	4.438 INCHES NOMINAL IN
Material Diameter	1.375 INCHES NOMINAL IN
Style Designator	CHAIN
Opening Width	2.250 INCHES NOMINAL IN
Eyelet Style	ROUND PLAIN
Eye Inside Diameter	1.625 INCHES NOMINAL IN
Material	STEEL

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
RR-C-271	4/1 Identification reference U.S. Government activity
F271-A42-B222	2/2 Government specification standardization U.S. Government activity
RR-C-271D TY4B CL2 D1 3/8IN	5/9 Secondary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4030 — Fittings for Rope, Cable, and Chain

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

4030-00-001-5120

SHACKLE

4030-00-001-9591

TERMINAL,ROPE,SWAGING

4030-00-001-9952

PLUG,WIRE ROPE

4030-00-001-9953

FERRULE,WIRE ROPE

4030-00-003-0385

4030-00-003-0385 · Item name not on file

4030-00-003-1512

SHACKLE

4030-00-003-1801

SLEEVE

4030-00-003-4166

4030-00-003-4166 · Item name not on file

Frequently Asked Questions

What is NSN 4030-01-366-5571?

NSN 4030-01-366-5571 is a Shackle, classified under FSC 4030, Fittings for Rope, Cable, and Chain. Status: active.

What are the specifications of 4030-01-366-5571?

Key specifications for 4030-01-366-5571: Inside Length: 4.438 INCHES NOMINAL IN; Material Diameter: 1.375 INCHES NOMINAL IN; Style Designator: CHAIN; Opening Width: 2.250 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4030-01-366-5571 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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