PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35670Valve,safety Relief

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4820-01-495-5316 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-495-5316 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-495-5316. Primary manufacturer part number: MS35670.
Features
  • Valve,safety Relief — FSC 4820
  • Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE BODY
  • Thread Direction: RIGHT-HAND FIRST END
  • Opening Pressure Setting: 45.0 POUNDS PER SQUARE INCH LBS
  • Surface Treatment: CADMIUM OR ZINC LOCATION NOT OTHERWISE SPECIFIED
  • Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
  • Style Designator: STRAIGHT THRU
  • Material: STEEL OVERALL
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-495-5316, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-495-5316
Primary Part NumberMS35670
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Material Document and ClassificationASTM A108 ASSN STD SINGLE MATERIAL RESPONSE BODY
Thread DirectionRIGHT-HAND FIRST END
Opening Pressure Setting45.0 POUNDS PER SQUARE INCH LBS
Surface TreatmentCADMIUM OR ZINC LOCATION NOT OTHERWISE SPECIFIED
Material Document and ClassificationASTM A108 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
Style DesignatorSTRAIGHT THRU
MaterialSTEEL OVERALL
Thread Series DesignatorPTF-SPL SHORT FIRST END
Operating Pressure80.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection StylePLAIN (PIPE) FIRST END
Valve Operation MethodAUTOMATIC
Connection TypeTHREADED CARTRIDGE FIRST END
Flow Control DevicePOPPET
Nominal Thread Size0.125 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4820-00-202-5632 INTERCHANGEABLE
Valve,safety Relief
4820-00-542-5683 INTERCHANGEABLE
Valve,safety Relief
4820-00-826-6465 INTERCHANGEABLE
Valve,safety Relief
4820-00-845-0067 INTERCHANGEABLE
Valve,safety Relief
4820-01-070-7670 INTERCHANGEABLE
Valve,safety Relief
4820-01-071-0688 INTERCHANGEABLE
Valve,safety Relief
4820-01-131-2341 INTERCHANGEABLE
Valve,safety Relief
4820-01-611-9622 INTERCHANGEABLE
Valve,safety Relief
4820-01-649-9043 INTERCHANGEABLE
Valve,safety Relief
Cross-Reference Index
Part NumberManufacturer
MS35670 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS35670-5A Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4820-00-202-5632INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-542-5683INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-826-6465INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-845-0067INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-070-7670INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-071-0688INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-131-2341INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-611-9622INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-649-9043INTERCHANGEABLE
VALVE,SAFETY RELIEF

Frequently Asked Questions

What is NSN 4820-01-495-5316?

NSN 4820-01-495-5316 is a Valve,safety Relief, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-495-5316?

NSN 4820-01-495-5316 has 2 cross-referenced part numbers: MS35670 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS35670-5A (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4820-01-495-5316?

There are 9 known substitutes for 4820-01-495-5316: 4820-00-202-5632, 4820-00-542-5683, 4820-00-826-6465 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35670?

Key specifications for MS35670: Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE BODY; Thread Direction: RIGHT-HAND FIRST END; Opening Pressure Setting: 45.0 POUNDS PER SQUARE INCH LBS; Surface Treatment: CADMIUM OR ZINC LOCATION NOT OTHERWISE SPECIFIED. 16 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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