PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS16995-77S316Screw,cap,socket Head

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-01-563-2551 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-563-2551 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-563-2551. Primary manufacturer part number: MS16995-77S316.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Head Height: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Width Across Flats: 0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
  • Head Diameter: 0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
  • Surface Treatment: PASSIVATE OVERALL
  • Material: STEEL COMP 316 OVERALL
  • Surface Treatment Document and Classification: QQ-P-35A ASSN STD SINGLE TREATMENT RESPONSE OVERALL A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 316 Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-563-2551, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-563-2551
Primary Part NumberMS16995-77S316
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread DirectionRIGHT-HAND
Head Height0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Width Across Flats0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
Head Diameter0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL COMP 316 OVERALL
Surface Treatment Document and ClassificationQQ-P-35A ASSN STD SINGLE TREATMENT RESPONSE OVERALL A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch16
Head StyleFLAT CHAMFER
Internal Drive StyleHEXAGON
Thread Class3A A
Thread Length1.250 INCHES NOMINAL IN
Nominal Thread Diameter0.375 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5305-00-988-7604MS16995-28 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-988-7605MS16995-29 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-988-7834MS16995-53 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-988-7846MS16995-83 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-990-0668MS16995-81 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-023-4764120974-01 INTERCHANGEABLE
Setscrew
Transico, Inc. Dba Eeco Switch
5305-01-169-718813144112-32 INTERCHANGEABLE
Screw,cap,socket Head
Us Army Aviation and Missile Command
5305-01-563-2441NASM16995 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-563-3281 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-733-9938NASM16995-3 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS16995-77S316 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NASM16995 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-988-7604INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
MS16995-28
5305-00-988-7605INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
MS16995-29
5305-00-988-7834INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
MS16995-53
5305-00-988-7846INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
MS16995-83
5305-00-990-0668INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
MS16995-81
5305-01-023-4764INTERCHANGEABLE
SETSCREW
120974-01
5305-01-169-7188INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
13144112-32
5305-01-563-2441INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
NASM16995
5305-01-563-3281INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-733-9938INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
NASM16995-3

Frequently Asked Questions

What is NSN 5305-01-563-2551?

NSN 5305-01-563-2551 is a Screw,cap,socket Head, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-563-2551?

NSN 5305-01-563-2551 has 2 cross-referenced part numbers: MS16995-77S316 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), NASM16995 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-01-563-2551?

There are 10 known substitutes for 5305-01-563-2551: 5305-00-988-7604, 5305-00-988-7605, 5305-00-988-7834 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS16995-77S316?

Key specifications for MS16995-77S316: Thread Direction: RIGHT-HAND; Head Height: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Width Across Flats: 0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN; Head Diameter: 0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN. 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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