NSN 2520-00-352-7440 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-352-7440. Manufacturer of record part number: 2F5970.
Also searched as2520-00-352-7440 ·
2520003527440 ·
NIIN 003527440 ·
00-352-7440 ·
FSC 2520 Vehicular Power Transmission Components · CAGE 11083 · 2F5970
General Characteristics Item Description: STEEL; PAINTED BLACK;5.265 IN. OD O/A; 1.625 IN. O/A THK; 3.812 IN. SMALLEST ID; 4.250 IN. LARGEST ID; 20 INTERNAL SPLINE GROOVES; 0.375 IN. TAPER AROUND COLLAR; 0.312 IN. H OF TAPER AT TOP OF COLLAR; 0.250 IN. H OF TAPER AT BOTTOM OF COLLAR IN
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 2520-00-352-7440
NIIN: 003527440
FSC: 2520 — Vehicular Power Transmission Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 2F5970
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Collar, cataloged under National Stock Number 2520-00-352-7440, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 specification, 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.
Technical Specifications
Parameter
Value
NSN
2520-00-352-7440
Primary Part Number
2F5970
Item Name
Collar
FSC / FSG
2520 / 25 — Vehicular Power Transmission Components
Manufacturer
Caterpillar Inc Div Caterpillar Defense
Status
ACTIVE
General Characteristics Item Description
STEEL; PAINTED BLACK;5.265 IN. OD O/A; 1.625 IN. O/A THK; 3.812 IN. SMALLEST ID; 4.250 IN. LARGEST ID; 20 INTERNAL SPLINE GROOVES; 0.375 IN. TAPER AROUND COLLAR; 0.312 IN. H OF TAPER AT TOP OF COLLAR; 0.250 IN. H OF TAPER AT BOTTOM OF COLLAR IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 2520 — Vehicular Power Transmission Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2520-00-000-3976
2520-00-000-3976 · Item name not on file
2520-00-000-8852
2520-00-000-8852 · Item name not on file
2520-00-000-9292
2520-00-000-9292 · Item name not on file
2520-00-001-0011
2520-00-001-0011 · Item name not on file
2520-00-001-3397
2520-00-001-3397 · Item name not on file
2520-00-001-3425
2520-00-001-3425 · Item name not on file
2520-00-001-3440
ROLLER,CENTER
2520-00-001-3441
2520-00-001-3441 · Item name not on file
Frequently Asked Questions
What is NSN 2520-00-352-7440?
NSN 2520-00-352-7440 is a Collar, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
What part numbers are listed for NSN 2520-00-352-7440?
NSN 2520-00-352-7440 has 1 manufacturer part number on file: 2F5970 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 2F5970?
Key specifications for 2F5970: General Characteristics Item Description: STEEL; PAINTED BLACK;5.265 IN. OD O/A; 1.625 IN. O/A THK; 3.812 IN. SMALLEST ID; 4.250 IN. LARGEST ID; 20 INTERNAL SPLINE GROOVES; 0.375 IN. TAPER AROUND COLLAR; 0.312 IN. H OF TAPER AT TOP OF COLLAR; 0.250 IN. H OF TAPER AT BOTTOM OF COLLAR IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 2520-00-352-7440 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.