PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7551-1Inserter,screw Thread Insert

Stanley Engineered Fastening Llc · NSN 5120-01-323-9722 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-323-9722 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-323-9722. Primary manufacturer part number: 7551-1.
Features
  • Inserter,screw Thread Insert — FSC 5120
  • Unit Type: PREWINDER
  • Thread Size and Series/type Designator: 12-24 UNIFIED NATIONAL COARSE (UNC)
  • Nondefinitive Spec/std Data: 3 TYPE AND 1 CLASS AND A STYLE
  • 5 verified cross-references
  • Primary manufacturer: Stanley Engineered Fastening Llc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Inserter,screw Thread Insert, cataloged under National Stock Number 5120-01-323-9722, 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 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN5120-01-323-9722
Primary Part Number7551-1
Item NameInserter,screw Thread Insert
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerStanley Engineered Fastening Llc
StatusACTIVE
Unit TypePREWINDER
Thread Size and Series/type Designator12-24 UNIFIED NATIONAL COARSE (UNC)
Nondefinitive Spec/std Data3 TYPE AND 1 CLASS AND A STYLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-050-9731 INTERCHANGEABLE
Inserter,screw Thread Insert
4920-00-172-161272352 INTERCHANGEABLE
Clip
Ametek Inc Lamb Electric Div
5120-00-237-4669 INTERCHANGEABLE
Inserter,screw Thread Insert
2915-00-452-8337 INTERCHANGEABLE
Pad
5120-00-672-8897HIT1220 INTERCHANGEABLE
Inserter,screw Thread Insert
Helical Wire Inc
5120-00-710-7435 INTERCHANGEABLE
Inserter,screw Thread Insert
5120-00-710-7437 INTERCHANGEABLE
Inserter,screw Thread Insert
5120-00-797-2402 INTERCHANGEABLE
Inserter,screw Thread Insert
5120-00-797-2403 INTERCHANGEABLE
Inserter,screw Thread Insert
5120-00-797-2404 INTERCHANGEABLE
Inserter,screw Thread Insert
Cross-Reference Index
Part NumberManufacturer
MIL-T-21309 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-59158 TY3CL1STA General Services Administration Federal Supply Service (USA)
MIL-T-21309 TY3CL1STA General Services Administration Federal Supply Service (USA)
7551-1 PRIMARY Stanley Engineered Fastening Llc (USA)
A-A-59158 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
5120-00-050-9731INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
4920-00-172-1612INTERCHANGEABLE
CLIP
72352
5120-00-237-4669INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
2915-00-452-8337INTERCHANGEABLE
PAD
5120-00-672-8897INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
HIT1220
5120-00-710-7435INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-710-7437INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-797-2402INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-797-2403INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-797-2404INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-797-2405INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-797-2407INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT

Frequently Asked Questions

What is NSN 5120-01-323-9722?

NSN 5120-01-323-9722 is a Inserter,screw Thread Insert, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-323-9722?

NSN 5120-01-323-9722 has 5 cross-referenced part numbers: MIL-T-21309 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), A-A-59158 TY3CL1STA (General Services Administration Federal Supply Service), MIL-T-21309 TY3CL1STA (General Services Administration Federal Supply Service), 7551-1 (Stanley Engineered Fastening Llc), A-A-59158 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 5120-01-323-9722?

There are 12 known substitutes for 5120-01-323-9722: 5120-00-050-9731, 4920-00-172-1612, 5120-00-237-4669 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7551-1?

Key specifications for 7551-1: Unit Type: PREWINDER; Thread Size and Series/type Designator: 12-24 UNIFIED NATIONAL COARSE (UNC); Nondefinitive Spec/std Data: 3 TYPE AND 1 CLASS AND A STYLE. 3 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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