PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CB27657-007Screw,cap,socket Head

Moog Inc. Dba Ampac-Isp Corp · NSN 5305-01-398-9598 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-398-9598 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-398-9598. Primary manufacturer part number: CB27657-007.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Quantity Per Inch: 18
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL OVERALL
  • Head Style: HEXAGON
  • Nominal Thread Diameter: 0.3125 INCHES IN
  • 3 verified cross-references
  • Primary manufacturer: Moog Inc. Dba Ampac-Isp Corp
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 5305-01-398-9598, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Moog Inc. Dba Ampac-Isp Corp. Government technical data includes 5 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-398-9598
Primary Part NumberCB27657-007
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMoog Inc. Dba Ampac-Isp Corp
StatusACTIVE
Thread Quantity Per Inch18
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Head StyleHEXAGON
Nominal Thread Diameter0.3125 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5930-00-060-1637112339H2 INTERCHANGEABLE
Switch,pressure
Komatsu America Corp.
5136-00-197-95567252 INTERCHANGEABLE
Die,rethreading
Stanley Tools Div of Stanley Works
6550-01-162-1195 INTERCHANGEABLE
Sensitivity Discs,diagnostic
5310-01-407-475831969 INTERCHANGEABLE
Nut,plain,hexagon
Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.
5210-01-434-9950231 INTERCHANGEABLE
Gage,thickness
General Tools Manufacturing Co., Llc.
3110-01-442-483731313J2/QCL7C INTERCHANGEABLE
Bearing,roller,tapered
Skf Usa Inc.
3110-01-658-100731313 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Kessler Intl Corp
Cross-Reference Index
Part NumberManufacturer
31313 Moog Inc. Dba Ampac-Isp Corp (USA)
CB27657-007 PRIMARY Moog Inc. Dba Ampac-Isp Corp (USA)
110-28375 PIECE 51 Moog Inc. Dba Ampac-Isp Corp (USA)
Related Parts
5930-00-060-1637INTERCHANGEABLE
SWITCH,PRESSURE
112339H2
5136-00-197-9556INTERCHANGEABLE
DIE,RETHREADING
7252
6550-01-162-1195INTERCHANGEABLE
SENSITIVITY DISCS,DIAGNOSTIC
5310-01-407-4758INTERCHANGEABLE
NUT,PLAIN,HEXAGON
31969
5210-01-434-9950INTERCHANGEABLE
GAGE,THICKNESS
231
3110-01-442-4837INTERCHANGEABLE
BEARING,ROLLER,TAPERED
31313J2/QCL7C
3110-01-658-1007INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
31313

Frequently Asked Questions

What is NSN 5305-01-398-9598?

NSN 5305-01-398-9598 is a Screw,cap,socket Head, manufactured by Moog Inc. Dba Ampac-Isp Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-398-9598?

NSN 5305-01-398-9598 has 3 cross-referenced part numbers: 31313 (Moog Inc. Dba Ampac-Isp Corp), CB27657-007 (Moog Inc. Dba Ampac-Isp Corp), 110-28375 PIECE 51 (Moog Inc. Dba Ampac-Isp Corp).

What NSN replaces 5305-01-398-9598?

There are 7 known substitutes for 5305-01-398-9598: 5930-00-060-1637, 5136-00-197-9556, 6550-01-162-1195 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CB27657-007?

Key specifications for CB27657-007: Thread Quantity Per Inch: 18; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL OVERALL; Head Style: HEXAGON. 5 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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