PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PWA51757-18Screw,cap,socket Head

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5305-01-109-5455 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-109-5455 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-109-5455. Primary manufacturer part number: PWA51757-18.
Features
  • Screw,cap,socket Head — FSC 5305
  • Material: STEEL OVERALL
  • Thread Series Designator: UNRC
  • Head Diameter: 0.198 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
  • Thread Length: 0.325 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Head Height: 0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.125 INCHES IN
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 5305-01-109-5455, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-109-5455
Primary Part NumberPWA51757-18
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusCANCELLED
MaterialSTEEL OVERALL
Thread Series DesignatorUNRC
Head Diameter0.198 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
Thread Length0.325 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Head Height0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Nominal Thread Diameter0.125 INCHES IN
Width Across Flats0.094 INCHES NOMINAL IN
Internal Drive StyleHEXAGON
Thread Quantity Per Inch40
Head StyleFLAT CHAMFER
Fastener Length0.375 INCHES NOMINAL IN
Thread Class3A A
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5330-00-286-029072030 INTERCHANGEABLE
Gasket
Stewart-Warner Corporation
5977-01-164-6354 INTERCHANGEABLE
Brush,electrical Contact
5330-01-507-273472030 INTERCHANGEABLE
Gasket,level Switch
Hydraulics International Inc
5330-01-671-103572030 INTERCHANGEABLE
Gasket
E P Maxima-J Inc
Cross-Reference Index
Part NumberManufacturer
72030 H-K Connecticut Holding Company (USA)
PWA53361-4 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
PWA51757-18 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
EDP72030 H-K Connecticut Holding Company (USA)
PWA50640-2 H-K Connecticut Holding Company (USA)
Related Parts
5330-00-286-0290INTERCHANGEABLE
GASKET
72030
5977-01-164-6354INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
5330-01-507-2734INTERCHANGEABLE
GASKET,LEVEL SWITCH
72030
5330-01-671-1035INTERCHANGEABLE
GASKET
72030

Frequently Asked Questions

What is NSN 5305-01-109-5455?

NSN 5305-01-109-5455 is a Screw,cap,socket Head, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-109-5455?

NSN 5305-01-109-5455 has 5 cross-referenced part numbers: 72030 (H-K Connecticut Holding Company), PWA53361-4 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), PWA51757-18 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), EDP72030 (H-K Connecticut Holding Company), PWA50640-2 (H-K Connecticut Holding Company).

What NSN replaces 5305-01-109-5455?

There are 4 known substitutes for 5305-01-109-5455: 5330-00-286-0290, 5977-01-164-6354, 5330-01-507-2734 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PWA51757-18?

Key specifications for PWA51757-18: Material: STEEL OVERALL; Thread Series Designator: UNRC; Head Diameter: 0.198 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN; Thread Length: 0.325 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-109-5455 still in active supply?

NSN 5305-01-109-5455 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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