PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3581-4Tang Breakoff Tool,screw Thread

Stanley Engineered Fastening Llc · NSN 5120-01-323-2237 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-323-2237 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-323-2237. Primary manufacturer part number: 3581-4.
Features
  • Tang Breakoff Tool,screw Thread — FSC 5120
  • Thread Size and Series/type Designator: 1/4-28 UNF
  • 1 verified cross-reference
  • Primary manufacturer: Stanley Engineered Fastening Llc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Tang Breakoff Tool,screw Thread, cataloged under National Stock Number 5120-01-323-2237, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Stanley Engineered Fastening Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-323-2237
Primary Part Number3581-4
Item NameTang Breakoff Tool,screw Thread
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerStanley Engineered Fastening Llc
StatusACTIVE
Thread Size and Series/type Designator1/4-28 UNF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2915-00-107-1468 INTERCHANGEABLE
Nozzle,fuel Injection
2810-00-118-933035814 INTERCHANGEABLE
Camshaft,engine
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5905-00-258-70638672745 INTERCHANGEABLE
Resistor,variable,wire Wound,non
U S Army Tank Automotive Command Amsta-Im-Mm
3120-00-347-573935814 INTERCHANGEABLE
Bushing,sleeve
Mack Trucks Inc Parts Opn
6730-00-937-6399 INTERCHANGEABLE
Sprocket Guard
5310-01-029-6848N35814 INTERCHANGEABLE
Washer,flat
Leslie Controls, Inc. Dba Leslie Controls Inc
5330-01-271-0418358-14 INTERCHANGEABLE
Gasket
Avox Systems Inc Dba Avox Systems Inc
Cross-Reference Index
Part NumberManufacturer
3581-4 Stanley Engineered Fastening Llc (USA)
Related Parts
2915-00-107-1468INTERCHANGEABLE
NOZZLE,FUEL INJECTION
2810-00-118-9330INTERCHANGEABLE
CAMSHAFT,ENGINE
35814
5905-00-258-7063INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
8672745
3120-00-347-5739INTERCHANGEABLE
BUSHING,SLEEVE
35814
6730-00-937-6399INTERCHANGEABLE
SPROCKET GUARD
5310-01-029-6848INTERCHANGEABLE
WASHER,FLAT
N35814
5330-01-271-0418INTERCHANGEABLE
GASKET
358-14

Frequently Asked Questions

What is NSN 5120-01-323-2237?

NSN 5120-01-323-2237 is a Tang Breakoff Tool,screw Thread, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-323-2237?

NSN 5120-01-323-2237 has 1 cross-referenced part number: 3581-4 (Stanley Engineered Fastening Llc).

What NSN replaces 5120-01-323-2237?

There are 7 known substitutes for 5120-01-323-2237: 2915-00-107-1468, 2810-00-118-9330, 5905-00-258-7063 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3581-4?

Key specifications for 3581-4: Thread Size and Series/type Designator: 1/4-28 UNF. 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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