PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

161561Screw,tapping

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5305-00-655-9691 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-655-9691 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-655-9691. Primary manufacturer part number: 161561.
Features
  • Screw,tapping — FSC 5305
  • Fastener Length: 0.250 INCHES NOMINAL IN
  • Head Style: ROUND
  • Material: STEEL OVERALL
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Nonmachine Nominal Thread Diameter: 0.125 INCHES IN
  • Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
  • Head Diameter: 0.217 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,tapping, cataloged under National Stock Number 5305-00-655-9691, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-655-9691
Primary Part Number161561
Item NameScrew,tapping
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Fastener Length0.250 INCHES NOMINAL IN
Head StyleROUND
MaterialSTEEL OVERALL
Internal Drive StyleCROSS RECESS TYPE 1
Nonmachine Nominal Thread Diameter0.125 INCHES IN
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
Head Diameter0.217 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
Features ProvidedCASEHARDENED
Head Height0.083 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4940-00-255-8371214-852 INTERCHANGEABLE
Rod,trip Air Valve
Graco Inc.
6110-01-195-0508161561 INTERCHANGEABLE
Protector,thermal-Overload,elect
Mcg Electronics, Inc. Dba Mcg Electronics Inc
Cross-Reference Index
Part NumberManufacturer
100B10T Cts Corp Electromechanical Div (USA)
161561 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
161561 Asap Semiconductor, Llc Dba Asap Semiconductor (USA)
Related Parts
4940-00-255-8371INTERCHANGEABLE
ROD,TRIP AIR VALVE
214-852
6110-01-195-0508INTERCHANGEABLE
PROTECTOR,THERMAL-OVERLOAD,ELECT
161561

Frequently Asked Questions

What is NSN 5305-00-655-9691?

NSN 5305-00-655-9691 is a Screw,tapping, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-655-9691?

NSN 5305-00-655-9691 has 3 cross-referenced part numbers: 100B10T (Cts Corp Electromechanical Div), 161561 (U S Army Tank Automotive Command Amsta-Im-Mm), 161561 (Asap Semiconductor, Llc Dba Asap Semiconductor).

What NSN replaces 5305-00-655-9691?

There are 2 known substitutes for 5305-00-655-9691: 4940-00-255-8371, 6110-01-195-0508. Verify interchangeability with system specifications before substitution.

What are the specifications of 161561?

Key specifications for 161561: Fastener Length: 0.250 INCHES NOMINAL IN; Head Style: ROUND; Material: STEEL OVERALL; Internal Drive Style: CROSS RECESS TYPE 1. 11 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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