PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3724-9Inserter,screw Thread Insert

Stanley Engineered Fastening Llc · NSN 5120-00-555-9497 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-555-9497 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-555-9497. Primary manufacturer part number: 3724-9.
Features
  • Inserter,screw Thread Insert — FSC 5120
  • Thread Size and Series/type Designator: 9/16-12 UNIFIED NATIONAL COARSE (UNC)
  • Unit Type: MANDREL
  • Nondefinitive Spec/std Data: 3 TYPE AND 2 CLASS AND B 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 5120-00-555-9497, 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-555-9497
Primary Part Number3724-9
Item NameInserter,screw Thread Insert
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerStanley Engineered Fastening Llc
StatusCANCELLED
Thread Size and Series/type Designator9/16-12 UNIFIED NATIONAL COARSE (UNC)
Unit TypeMANDREL
Nondefinitive Spec/std Data3 TYPE AND 2 CLASS AND B STYLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5110-00-233-96815110-00-233-9681 INTERCHANGEABLE
File,hand
General Services Administration Federal Supply Service
5120-00-804-6052 INTERCHANGEABLE
Inserter,screw Thread Insert
5120-00-804-6053 INTERCHANGEABLE
Inserter,screw Thread Insert
5120-00-804-6054 INTERCHANGEABLE
Inserter,screw Thread Insert
5330-00-899-3699358331-2 INTERCHANGEABLE
Seal,rotor,air-Oil
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
5120-01-032-40503724-20 INTERCHANGEABLE
Inserter,screw Thread Insert
Stanley Engineered Fastening Llc
5365-01-162-302837249 INTERCHANGEABLE
Ring
Alfa Laval Inc
3040-01-354-1134206651 INTERCHANGEABLE
Link Lever to Spider
Wiggins Lift Co Inc
Cross-Reference Index
Part NumberManufacturer
3724-9 Stanley Engineered Fastening Llc (USA)
A-A-59158 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MIL-T-21309 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-21309 TY3CL2STB General Services Administration Federal Supply Service (USA)
A-A-59158 TY3CL2STB General Services Administration Federal Supply Service (USA)
Related Parts
5110-00-233-9681INTERCHANGEABLE
FILE,HAND
5110-00-233-9681
5120-00-804-6052INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-804-6053INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5120-00-804-6054INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
5330-00-899-3699INTERCHANGEABLE
SEAL,ROTOR,AIR-OIL
358331-2
5120-01-032-4050INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
3724-20
5365-01-162-3028INTERCHANGEABLE
RING
37249
3040-01-354-1134INTERCHANGEABLE
LINK LEVER TO SPIDER
206651

Frequently Asked Questions

What is NSN 5120-00-555-9497?

NSN 5120-00-555-9497 is a Inserter,screw Thread Insert, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-555-9497?

NSN 5120-00-555-9497 has 5 cross-referenced part numbers: 3724-9 (Stanley Engineered Fastening Llc), A-A-59158 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MIL-T-21309 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-21309 TY3CL2STB (General Services Administration Federal Supply Service), A-A-59158 TY3CL2STB (General Services Administration Federal Supply Service).

What NSN replaces 5120-00-555-9497?

There are 8 known substitutes for 5120-00-555-9497: 5110-00-233-9681, 5120-00-804-6052, 5120-00-804-6053 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3724-9?

Key specifications for 3724-9: Thread Size and Series/type Designator: 9/16-12 UNIFIED NATIONAL COARSE (UNC); Unit Type: MANDREL; Nondefinitive Spec/std Data: 3 TYPE AND 2 CLASS AND B STYLE. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-555-9497 still in active supply?

NSN 5120-00-555-9497 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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