PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21161-2Screw,machine

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5305-01-095-3958 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-095-3958 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-095-3958. Primary manufacturer part number: 21161-2.
Features
  • Screw,machine — FSC 5305
  • Head Height: 0.067 INCHES NOMINAL IN
  • Screw Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
  • Thread Length: 1.810 INCHES NOMINAL IN
  • Thread Class: 2A A
  • Screw Surface Treatment: PASSIVATE
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-095-3958, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-095-3958
Primary Part Number21161-2
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
Head Height0.067 INCHES NOMINAL IN
Screw Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
Thread Length1.810 INCHES NOMINAL IN
Thread Class2A A
Screw Surface TreatmentPASSIVATE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Head StyleFLAT CHAMFER
Nominal Thread Diameter0.112 INCHES IN
Thread Quantity Per Inch40
Fastener Length1.810 INCHES NOMINAL IN
Screw MaterialSTEEL CORROSION RESISTING
Head Diameter0.225 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-052-4652MSSSP110-TY 2 CL 600 ST 3 SZ 1.5 INTERCHANGEABLE
Valve,ball
Sae International Dba Sae International
5340-00-143-5206 INTERCHANGEABLE
Cover,access
4730-00-199-3552 INTERCHANGEABLE
Nipple,pipe
5360-00-218-820621-161 INTERCHANGEABLE
Spring,brake Retracting
Goodrich Corporation
5315-00-221-72295190442 INTERCHANGEABLE
Pin,straight,headless
Rolls-Royce Solutions America Inc
5310-00-402-46227306C INTERCHANGEABLE
Washer,flat
Gc/waldom Inc
3040-00-488-8397 INTERCHANGEABLE
Gearshaft,spur
5996-00-725-2690714544-805 INTERCHANGEABLE
Amplifier,direct Current
Raytheon Company Dba Raytheon
5950-00-736-8820 INTERCHANGEABLE
Transformer,discriminator
5920-00-974-43812110-0023 INTERCHANGEABLE
Fuse,cartridge
Keysight Technologies Inc
Cross-Reference Index
Part NumberManufacturer
21161-2D Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
21161 Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
21161-2 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
4820-00-052-4652INTERCHANGEABLE
VALVE,BALL
MSSSP110-TY 2 CL 600 ST 3 SZ 1.5
5340-00-143-5206INTERCHANGEABLE
COVER,ACCESS
4730-00-199-3552INTERCHANGEABLE
NIPPLE,PIPE
5360-00-218-8206INTERCHANGEABLE
SPRING,BRAKE RETRACTING
21-161
5315-00-221-7229INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5190442
5310-00-402-4622INTERCHANGEABLE
WASHER,FLAT
7306C
3040-00-488-8397INTERCHANGEABLE
GEARSHAFT,SPUR
5996-00-725-2690INTERCHANGEABLE
AMPLIFIER,DIRECT CURRENT
714544-805
5950-00-736-8820INTERCHANGEABLE
TRANSFORMER,DISCRIMINATOR
5920-00-974-4381INTERCHANGEABLE
FUSE,CARTRIDGE
2110-0023
2910-01-024-7460INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
NW21161
6685-01-112-2334INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
12300128

Frequently Asked Questions

What is NSN 5305-01-095-3958?

NSN 5305-01-095-3958 is a Screw,machine, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-095-3958?

NSN 5305-01-095-3958 has 3 cross-referenced part numbers: 21161-2D (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 21161 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 21161-2 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 5305-01-095-3958?

There are 12 known substitutes for 5305-01-095-3958: 4820-00-052-4652, 5340-00-143-5206, 4730-00-199-3552 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21161-2?

Key specifications for 21161-2: Head Height: 0.067 INCHES NOMINAL IN; Screw Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE; Thread Length: 1.810 INCHES NOMINAL IN; Thread Class: 2A A. 14 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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