PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1257-5-1Bridge Board Assembly

Mission Systems Davenport Inc. · NSN 6680-01-012-0327 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-012-0327 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-012-0327. Primary manufacturer part number: 1257-5-1.
Features
  • Bridge Board Assembly — FSC 6680
  • General Characteristics Item Description: STEEL,9.000 IN. LG,8.000 IN. W,3.000 IN. H IN
  • 1 verified cross-reference
  • Primary manufacturer: Mission Systems Davenport Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Bridge Board Assembly, cataloged under National Stock Number 6680-01-012-0327, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Mission Systems Davenport Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-012-0327
Primary Part Number1257-5-1
Item NameBridge Board Assembly
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerMission Systems Davenport Inc.
StatusACTIVE
General Characteristics Item DescriptionSTEEL,9.000 IN. LG,8.000 IN. W,3.000 IN. H IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-012-5751125751 INTERCHANGEABLE
Washer,lock
General Motors Llc Dba General Motors Llc
5136-00-227-8625 INTERCHANGEABLE
Tap,thread Cutting
5331-01-307-1798128825 INTERCHANGEABLE
O-Ring
Cnh Industrial America Llc Dba Cnh America
Cross-Reference Index
Part NumberManufacturer
1257-5-1 PRIMARY Mission Systems Davenport Inc. (USA)
Related Parts
5310-00-012-5751INTERCHANGEABLE
WASHER,LOCK
125751
5136-00-227-8625INTERCHANGEABLE
TAP,THREAD CUTTING
5331-01-307-1798INTERCHANGEABLE
O-RING
128825

Frequently Asked Questions

What is NSN 6680-01-012-0327?

NSN 6680-01-012-0327 is a Bridge Board Assembly, manufactured by Mission Systems Davenport Inc., classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-012-0327?

NSN 6680-01-012-0327 has 1 cross-referenced part number: 1257-5-1 (Mission Systems Davenport Inc.).

What NSN replaces 6680-01-012-0327?

There are 3 known substitutes for 6680-01-012-0327: 5310-00-012-5751, 5136-00-227-8625, 5331-01-307-1798. Verify interchangeability with system specifications before substitution.

What are the specifications of 1257-5-1?

Key specifications for 1257-5-1: General Characteristics Item Description: STEEL,9.000 IN. LG,8.000 IN. W,3.000 IN. H IN; End Item Identification: 6680008286559. 2 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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