PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

201091Screw,instrument

Waltham Aircraft Clock Corp · NSN 5305-00-693-7770 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-693-7770 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-693-7770. Primary manufacturer part number: 201091.
Features
  • Screw,instrument — FSC 5305
  • Surface Treatment: NICKEL OVERALL
  • Material: STEEL OVERALL
  • Thread Length: 1.15 MILLIMETERS NOMINAL MM
  • Head Height: 0.40 MILLIMETERS NOMINAL MM
  • Fastener Length: 1.50 MILLIMETERS NOMINAL MM
  • Internal Drive Style: SLOT
  • Head Diameter: 3.05 MILLIMETERS NOMINAL MM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,instrument, cataloged under National Stock Number 5305-00-693-7770, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Waltham Aircraft Clock Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-693-7770
Primary Part Number201091
Item NameScrew,instrument
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerWaltham Aircraft Clock Corp
StatusACTIVE
Surface TreatmentNICKEL OVERALL
MaterialSTEEL OVERALL
Thread Length1.15 MILLIMETERS NOMINAL MM
Head Height0.40 MILLIMETERS NOMINAL MM
Fastener Length1.50 MILLIMETERS NOMINAL MM
Internal Drive StyleSLOT
Head Diameter3.05 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-311-8165201091 INTERCHANGEABLE
Gasket
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5995-00-753-133920109-1 INTERCHANGEABLE
Wiring Harness,branched
Grimes Aerospace Company
5999-00-831-8762380635-1 INTERCHANGEABLE
Contact,electrical
Te Connectivity Corporation
7035-01-095-315620109-1 INTERCHANGEABLE
Alphanumeric Displa
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
3040-01-139-6024201091 INTERCHANGEABLE
Shaft,straight
Admiral Filter Company Llc
4730-01-225-9016201091 INTERCHANGEABLE
Coupling Half,self-Sealing
Mcnally Industries, Llc
5935-01-347-3230 INTERCHANGEABLE
Connector,receptacle,electrical
5930-01-351-574780-1091 INTERCHANGEABLE
Switch Subassembly
Fabwright Inc
Cross-Reference Index
Part NumberManufacturer
10125431 Nimikkeistokeskus Ncb Finland (FIN)
239 Waltham Clock Co Inc (USA)
201091 PRIMARY Waltham Aircraft Clock Corp (USA)
20000239 Waltham Clock Co Inc (USA)
Related Parts
5330-00-311-8165INTERCHANGEABLE
GASKET
201091
5995-00-753-1339INTERCHANGEABLE
WIRING HARNESS,BRANCHED
20109-1
5999-00-831-8762INTERCHANGEABLE
CONTACT,ELECTRICAL
380635-1
7035-01-095-3156INTERCHANGEABLE
ALPHANUMERIC DISPLA
20109-1
3040-01-139-6024INTERCHANGEABLE
SHAFT,STRAIGHT
201091
4730-01-225-9016INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
201091
5935-01-347-3230INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5930-01-351-5747INTERCHANGEABLE
SWITCH SUBASSEMBLY
80-1091

Frequently Asked Questions

What is NSN 5305-00-693-7770?

NSN 5305-00-693-7770 is a Screw,instrument, manufactured by Waltham Aircraft Clock Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-693-7770?

NSN 5305-00-693-7770 has 4 cross-referenced part numbers: 10125431 (Nimikkeistokeskus Ncb Finland), 239 (Waltham Clock Co Inc), 201091 (Waltham Aircraft Clock Corp), 20000239 (Waltham Clock Co Inc).

What NSN replaces 5305-00-693-7770?

There are 8 known substitutes for 5305-00-693-7770: 5330-00-311-8165, 5995-00-753-1339, 5999-00-831-8762 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 201091?

Key specifications for 201091: Surface Treatment: NICKEL OVERALL; Material: STEEL OVERALL; Thread Length: 1.15 MILLIMETERS NOMINAL MM; Head Height: 0.40 MILLIMETERS NOMINAL MM. 7 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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