PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

125-1-5Insert,screw Thread

Stanley Engineered Fastening Llc · NSN 5325-00-950-1259 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-950-1259 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-950-1259. Primary manufacturer part number: 125-1-5.
Features
  • Insert,screw Thread — FSC 5325
  • Length: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
  • Style Designator: KEYLOCK
  • Material Document and Classification: QQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Top Unthreaded Portion Outside Diameter: 0.239 INCHES NOMINAL IN
  • Insert Size: 0.312-18 UNC-3A A
  • Top Portion Unthreaded Outside Length: 0.040 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1117 Overall construction
General Description

The Insert,screw Thread, cataloged under National Stock Number 5325-00-950-1259, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stanley Engineered Fastening Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-950-1259
Primary Part Number125-1-5
Item NameInsert,screw Thread
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerStanley Engineered Fastening Llc
StatusACTIVE
Length0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
Style DesignatorKEYLOCK
Material Document and ClassificationQQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Top Unthreaded Portion Outside Diameter0.239 INCHES NOMINAL IN
Insert Size0.312-18 UNC-3A A
Top Portion Unthreaded Outside Length0.040 INCHES NOMINAL IN
MaterialSTEEL COMP 1117 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4820-00-036-1568N1251503 INTERCHANGEABLE
Cap,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5910-00-068-1335 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5977-00-441-829312515 INTERCHANGEABLE
Holder,electrical Contact Brush
Safran Power Usa Llc
3110-00-554-298311291 INTERCHANGEABLE
Bearing,ball,annular
Dressta North America Ltd
5930-00-739-7038 INTERCHANGEABLE
Switch,thermostatic
7510-00-971-8030 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
4530-01-027-1191B-2-1-293 INTERCHANGEABLE
Atomizer Assembly
Todd Combustion Inc
5935-01-068-9382ST5M1348TS5B INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company Div Defense
3040-01-098-2902 INTERCHANGEABLE
Plate,retaining,shaft
5905-01-208-627212515 INTERCHANGEABLE
Resistor,variable
Rockwell Automation, Inc. Dba Rockwell Automation
Cross-Reference Index
Part NumberManufacturer
125-1-5 Stanley Engineered Fastening Llc (USA)
931A-2CS312 Stanley Engineered Fastening Llc (USA)
Related Parts
4820-00-036-1568INTERCHANGEABLE
CAP,VALVE
N1251503
5910-00-068-1335INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5977-00-441-8293INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
12515
3110-00-554-2983INTERCHANGEABLE
BEARING,BALL,ANNULAR
11291
5930-00-739-7038INTERCHANGEABLE
SWITCH,THERMOSTATIC
7510-00-971-8030INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
4530-01-027-1191INTERCHANGEABLE
ATOMIZER ASSEMBLY
B-2-1-293
5935-01-068-9382INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1348TS5B
3040-01-098-2902INTERCHANGEABLE
PLATE,RETAINING,SHAFT
5905-01-208-6272INTERCHANGEABLE
RESISTOR,VARIABLE
12515
5640-01-499-0194INTERCHANGEABLE
INSULATION BLANKET,THERMAL

Frequently Asked Questions

What is NSN 5325-00-950-1259?

NSN 5325-00-950-1259 is a Insert,screw Thread, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-950-1259?

NSN 5325-00-950-1259 has 2 cross-referenced part numbers: 125-1-5 (Stanley Engineered Fastening Llc), 931A-2CS312 (Stanley Engineered Fastening Llc).

What NSN replaces 5325-00-950-1259?

There are 11 known substitutes for 5325-00-950-1259: 4820-00-036-1568, 5910-00-068-1335, 5977-00-441-8293 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 125-1-5?

Key specifications for 125-1-5: Length: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN; Style Designator: KEYLOCK; Material Document and Classification: QQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: CADMIUM OVERALL. 8 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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