PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12957Screw,machine

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5305-00-788-3735 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-788-3735 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-788-3735. Primary manufacturer part number: 12957.
Features
  • Screw,machine — FSC 5305
  • Thread Class: 2A A
  • Screw Material: STEEL COMP 1035
  • Thread Quantity Per Inch: 32
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Head Height: 0.096 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
  • Screw Material Document and Classification: ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE
  • Width Between Flats: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-788-3735, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5305-00-788-3735
Primary Part Number12957
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Thread Class2A A
Screw MaterialSTEEL COMP 1035
Thread Quantity Per Inch32
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Height0.096 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
Screw Material Document and ClassificationASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE
Width Between Flats0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Fastener Length0.375 INCHES NOMINAL IN
Thread Length0.312 INCHES MINIMUM IN
Head StyleHEXAGON
Nominal Thread Diameter0.164 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-050-4205AS15001-3P INTERCHANGEABLE
Fitting,lubrication
Sae International Dba Sae International
5330-00-056-0560 INTERCHANGEABLE
Ring,wiper
3810-00-127-942662083 INTERCHANGEABLE
Wiper,rod
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5340-00-128-81631637 INTERCHANGEABLE
Standoff,threaded,spacing
Keystone Electronics Corp
1560-00-180-989513042 INTERCHANGEABLE
Rib,aileron
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
2940-00-230-36813105264A INTERCHANGEABLE
Filter Element,fluid
Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)
5950-00-240-1309860444 INTERCHANGEABLE
Transformer,pulse
Raytheon Company Dba Raytheon
5360-00-526-241713042 INTERCHANGEABLE
Spring,helical,compression
Meggitt (new Hampshire), Inc
5910-00-721-1774109P47492 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Exxelia Usa, Inc.
5930-00-755-34408781K11 INTERCHANGEABLE
Switch,toggle
Safran Power Usa, Llc
Cross-Reference Index
Part NumberManufacturer
163-7 Cnh Industrial America Llc Dba Cnh America (USA)
1304-2 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
12957 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
Related Parts
4730-00-050-4205INTERCHANGEABLE
FITTING,LUBRICATION
AS15001-3P
5330-00-056-0560INTERCHANGEABLE
RING,WIPER
3810-00-127-9426INTERCHANGEABLE
WIPER,ROD
62083
5340-00-128-8163INTERCHANGEABLE
STANDOFF,THREADED,SPACING
1637
1560-00-180-9895INTERCHANGEABLE
RIB,AILERON
13042
2940-00-230-3681INTERCHANGEABLE
FILTER ELEMENT,FLUID
3105264A
5950-00-240-1309INTERCHANGEABLE
TRANSFORMER,PULSE
860444
5360-00-526-2417INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
13042
5910-00-721-1774INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
109P47492
5930-00-755-3440INTERCHANGEABLE
SWITCH,TOGGLE
8781K11
5325-00-763-0340INTERCHANGEABLE
RING,RETAINING
5965-00-775-6496INTERCHANGEABLE
HEADSET-MICROPHONE
539785-3

Frequently Asked Questions

What is NSN 5305-00-788-3735?

NSN 5305-00-788-3735 is a Screw,machine, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-788-3735?

NSN 5305-00-788-3735 has 3 cross-referenced part numbers: 163-7 (Cnh Industrial America Llc Dba Cnh America), 1304-2 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 12957 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems).

What NSN replaces 5305-00-788-3735?

There are 12 known substitutes for 5305-00-788-3735: 4730-00-050-4205, 5330-00-056-0560, 3810-00-127-9426 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12957?

Key specifications for 12957: Thread Class: 2A A; Screw Material: STEEL COMP 1035; Thread Quantity Per Inch: 32; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 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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