PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FIT-221 1/16 BLACKInsulation Sleeving,electrical

Belden, Inc. · NSN 5970-00-868-4521 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-868-4521 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-868-4521. Primary manufacturer part number: FIT-221 1/16 BLACK.
Features
  • Insulation Sleeving,electrical — FSC 5970
  • 7 verified cross-references
  • Primary manufacturer: Belden, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-00-868-4521, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Belden, Inc.. This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-00-868-4521
Primary Part NumberFIT-221 1/16 BLACK
Item NameInsulation Sleeving,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerBelden, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5970-00-057-3545M23053/5-109-4 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-451-0971 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-717-1474M23053/5-211-C INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-781-6836M23053/5-112-5 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-787-2335M23053/5-107-2 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-812-2968M23053/5-102-0 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-983-7843M23053/5-111-2 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-983-7926M23053/5-104-T INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-983-7949M23053/5-102-1 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-00-983-8030M23053/5-103-3 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MIL-I-23053/5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
FIT-221-1/16 Belden, Inc. (USA)
AS23053/5 Sae International Dba Sae International (USA)
SAE-AS23053/5 Sae International Dba Sae International (USA)
M23053/5-102-1 Sae International Dba Sae International (USA)
FIT-221 1/16 BLACK PRIMARY Belden, Inc. (USA)
430M008 Controlled Systems, Inc. (USA)
Related Parts
5970-00-057-3545INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-109-4
5970-00-451-0971INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-717-1474INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-211-C
5970-00-781-6836INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-112-5
5970-00-787-2335INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-107-2
5970-00-812-2968INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-102-0
5970-00-983-7843INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-111-2
5970-00-983-7926INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-104-T
5970-00-983-7949INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-102-1
5970-00-983-8030INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-103-3
5970-00-983-8043INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-107-3
5970-00-983-8071INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-102-8

Frequently Asked Questions

What is NSN 5970-00-868-4521?

NSN 5970-00-868-4521 is a Insulation Sleeving,electrical, manufactured by Belden, Inc., classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-868-4521?

NSN 5970-00-868-4521 has 7 cross-referenced part numbers: MIL-I-23053/5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), FIT-221-1/16 (Belden, Inc.), AS23053/5 (Sae International Dba Sae International), SAE-AS23053/5 (Sae International Dba Sae International), M23053/5-102-1 (Sae International Dba Sae International) and 2 more.

What NSN replaces 5970-00-868-4521?

There are 12 known substitutes for 5970-00-868-4521: 5970-00-057-3545, 5970-00-451-0971, 5970-00-717-1474 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FIT-221 1/16 BLACK?

Key specifications for FIT-221 1/16 BLACK: Special Features: EXTERIOR COLOR IS BLACK. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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