PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91-26-1Screw,machine

Curtiss-Wright Controls Integrated Sensing, Inc. · NSN 5305-01-031-6620 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-031-6620 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-031-6620. Primary manufacturer part number: 91-26-1.
Features
  • Screw,machine — FSC 5305
  • Head Diameter: 0.359 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Fastener Length: 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Internal Drive Style: SLOT
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Countersink Angle: 81.0 DEGREES NOMINAL
  • Head Style: FLAT COUNTERSUNK
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-031-6620, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Curtiss-Wright Controls Integrated Sensing, Inc.. Government technical data includes 13 verified specifications, 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-031-6620
Primary Part Number91-26-1
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerCurtiss-Wright Controls Integrated Sensing, Inc.
StatusACTIVE
Head Diameter0.359 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Nominal Thread Diameter0.190 INCHES IN
Fastener Length0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Internal Drive StyleSLOT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Countersink Angle81.0 DEGREES NOMINAL
Head StyleFLAT COUNTERSUNK
Screw Surface TreatmentCADMIUM AND CHROMATE
Thread Quantity Per Inch24
Thread Length0.169 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
Thread Class2A A
Thread DirectionRIGHT-HAND
Screw MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6665-00-455-316791261 INTERCHANGEABLE
Cap,reagent Bottle
Mine Safety Appliances Company
2825-00-591-813991261-001 INTERCHANGEABLE
Packing Assembly,la
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
5930-01-045-7304 INTERCHANGEABLE
Switch,pressure
5930-01-257-2071 INTERCHANGEABLE
Switch,thermostatic
5940-01-722-770798-6186 INTERCHANGEABLE
Cover,terminal
Market Forge Industries Inc
Cross-Reference Index
Part NumberManufacturer
91-26-1 Curtiss-Wright Controls Integrated Sensing, Inc. (USA)
Related Parts
6665-00-455-3167INTERCHANGEABLE
CAP,REAGENT BOTTLE
91261
2825-00-591-8139INTERCHANGEABLE
PACKING ASSEMBLY,LA
91261-001
5930-01-045-7304INTERCHANGEABLE
SWITCH,PRESSURE
5930-01-257-2071INTERCHANGEABLE
SWITCH,THERMOSTATIC
5940-01-722-7707INTERCHANGEABLE
COVER,TERMINAL
98-6186

Frequently Asked Questions

What is NSN 5305-01-031-6620?

NSN 5305-01-031-6620 is a Screw,machine, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc., classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-031-6620?

NSN 5305-01-031-6620 has 1 cross-referenced part number: 91-26-1 (Curtiss-Wright Controls Integrated Sensing, Inc.).

What NSN replaces 5305-01-031-6620?

There are 5 known substitutes for 5305-01-031-6620: 6665-00-455-3167, 2825-00-591-8139, 5930-01-045-7304 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 91-26-1?

Key specifications for 91-26-1: Head Diameter: 0.359 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN; Fastener Length: 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Internal Drive Style: SLOT. 13 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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