PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1377-M770Cartridge,delay

Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics · NSN 1377-00-453-5947 · FSC 1377 · No Item Name Available
Verified by PartsTable
NSN 1377-00-453-5947 — this item is cataloged by the U.S. Government under National Stock Number 1377-00-453-5947. Primary manufacturer part number: 1377-M770.
Features
  • Cartridge,delay — FSC 1377
  • Thread Size: 7/16 IN.-28 IN
  • Color Coded Feature: NOT INCLUDED
  • Package Model Number: NOT ASSIGNED AND N0T ASSIGNED
  • Detonation Initiation Method: PERCUSSION
  • Dod Ammunition Code: 1377-M770
  • Gross Weight: 2.0 SHIPPING CONTAINER POUNDS
  • Integral Cutting Punch: NOT INCLUDED
Applications
  • Applications requiring Aluminum Case construction
General Description

The Cartridge,delay, cataloged under National Stock Number 1377-00-453-5947, is classified within Federal Supply Class 1377 (No Item Name Available) of the Ammunition and Explosives group. The primary manufacturer of record is Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1377-00-453-5947
Primary Part Number1377-M770
Item NameCartridge,delay
FSC / FSG1377 / 13 — No Item Name Available
ManufacturerDepartment of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics
StatusACTIVE
Thread Size7/16 IN.-28 IN
Color Coded FeatureNOT INCLUDED
Package Model NumberNOT ASSIGNED AND N0T ASSIGNED
Detonation Initiation MethodPERCUSSION
Dod Ammunition Code1377-M770
Gross Weight2.0 SHIPPING CONTAINER POUNDS
Integral Cutting PunchNOT INCLUDED
Percussion Detonation TypeCENTER FIRE
Delay Time in Seconds0.225
Case Threaded Electrical ConnectionNOT INCLUDED
Cartridge Model NumberMK 136 MOD 0
Mounting Thread SeriesUNEF
MaterialALUMINUM CASE
Hazardous Material Classification Code00 INHABITED BUILDING DISTANCE AND 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION AND S STORAGE COMPATIBILITY GROUP AND F DEPARTMENT OF TRANSPORTATION CLASS AND I COAST GUARD CLASS
Wrenching FacilityNOT INCLUDED
Delay Element MaterialMANGANESE, JAN-M-476
RimNOT INCLUDED
Case Mounting ThreadINCLUDED
Reference Number Differentiating CharacteristicsAGUC,AGXZ,AJYJ
Unable to DecodeUNABLE TO DECODE
Body Diameter0.550 INCHES NOMINAL IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
1377-00-017-0682 INTERCHANGEABLE
Cartridge,delay
Cross-Reference Index
Part NumberManufacturer
1377-M770 Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics (USA)
DL2519923 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
1377-00-017-0682INTERCHANGEABLE
CARTRIDGE,DELAY

Frequently Asked Questions

What is NSN 1377-00-453-5947?

NSN 1377-00-453-5947 is a Cartridge,delay, manufactured by Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics, classified under FSC 1377 (No Item Name Available). Status: active.

What are the part numbers for NSN 1377-00-453-5947?

NSN 1377-00-453-5947 has 2 cross-referenced part numbers: 1377-M770 (Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics), DL2519923 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 1377-00-453-5947?

There is 1 known substitute for 1377-00-453-5947: 1377-00-017-0682. Verify interchangeability with system specifications before substitution.

What are the specifications of 1377-M770?

Key specifications for 1377-M770: Thread Size: 7/16 IN.-28 IN; Overall Length: 1.276 INCHES NOMINAL IN; Color Coded Feature: NOT INCLUDED; Package Model Number: NOT ASSIGNED AND N0T ASSIGNED. 24 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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