PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-0049Screw,cap,socket Head

Namjet Llc · NSN 5305-01-653-9121 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-653-9121 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-653-9121. Primary manufacturer part number: 4-0049.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Class: 2A A
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Fastener Length: 0.250 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32
  • Thread Series Designator: UNF
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-653-9121, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Namjet Llc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5305-01-653-9121
Primary Part Number4-0049
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNamjet Llc
StatusACTIVE
Thread Class2A A
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.190 INCHES IN
Fastener Length0.250 INCHES NOMINAL IN
Thread Quantity Per Inch32
Thread Series DesignatorUNF
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-010-3320 INTERCHANGEABLE
Washer,lock
2810-00-118-944440049 INTERCHANGEABLE
Cover,exhaust Valve,rocker Box
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6660-00-670-4850ID353BGMQ10 INTERCHANGEABLE
Indicator-Recorder,transmissomet
Joint Electronics Type Designation System
5355-01-181-056040049 INTERCHANGEABLE
Dial,scale
Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co
2910-01-206-090540049 INTERCHANGEABLE
Pump,fuel,electrical
Zenith Fuel Systems Llc
4130-01-336-715631212-91 INTERCHANGEABLE
Head Assembly Extru
Wilshire Corp
4820-01-394-759240049-1 INTERCHANGEABLE
Valve Adapter Plate
Morpac Industries, Inc Div Actuator
4820-01-448-4645KC49679 INTERCHANGEABLE
Valve,check
Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division
4320-01-498-482640049 INTERCHANGEABLE
Pump,hydraulic Ram,hand Driven
Parker Hannifin Corporation Div Hydraulic Systems Division
8465-01-541-831040049 INTERCHANGEABLE
Hydration System
Camelbak Products, Llc Dba Camelbak
Cross-Reference Index
Part NumberManufacturer
4-0049 PRIMARY Namjet Llc (USA)
4-0049 Birdon Pty Ltd (AUS)
Related Parts
5310-00-010-3320INTERCHANGEABLE
WASHER,LOCK
2810-00-118-9444INTERCHANGEABLE
COVER,EXHAUST VALVE,ROCKER BOX
40049
6660-00-670-4850INTERCHANGEABLE
INDICATOR-RECORDER,TRANSMISSOMET
ID353BGMQ10
5355-01-181-0560INTERCHANGEABLE
DIAL,SCALE
40049
2910-01-206-0905INTERCHANGEABLE
PUMP,FUEL,ELECTRICAL
40049
4130-01-336-7156INTERCHANGEABLE
HEAD ASSEMBLY EXTRU
31212-91
4820-01-394-7592INTERCHANGEABLE
VALVE ADAPTER PLATE
40049-1
4820-01-448-4645INTERCHANGEABLE
VALVE,CHECK
KC49679
4320-01-498-4826INTERCHANGEABLE
PUMP,HYDRAULIC RAM,HAND DRIVEN
40049
8465-01-541-8310INTERCHANGEABLE
HYDRATION SYSTEM
40049
5120-01-610-5826INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
40049
5935-01-701-6382INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
4004-9

Frequently Asked Questions

What is NSN 5305-01-653-9121?

NSN 5305-01-653-9121 is a Screw,cap,socket Head, manufactured by Namjet Llc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-653-9121?

NSN 5305-01-653-9121 has 2 cross-referenced part numbers: 4-0049 (Namjet Llc), 4-0049 (Birdon Pty Ltd).

What NSN replaces 5305-01-653-9121?

There are 12 known substitutes for 5305-01-653-9121: 5310-00-010-3320, 2810-00-118-9444, 6660-00-670-4850 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-0049?

Key specifications for 4-0049: Thread Class: 2A A; Thread Direction: RIGHT-HAND; Nominal Thread Diameter: 0.190 INCHES IN; Fastener Length: 0.250 INCHES NOMINAL IN. 9 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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