PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ABS RULESChannel,structural

American Bureau of Shipping · NSN 9520-00-277-4438 · FSC 9520 · No Item Name Available
Verified by PartsTable
NSN 9520-00-277-4438 — this item is cataloged by the U.S. Government under National Stock Number 9520-00-277-4438. Primary manufacturer part number: ABS RULES.
Features
  • Channel,structural — FSC 9520
  • Basic Shape Style: CHANNEL
  • Left Side Flange Thickness: 0.180 INCHES NOMINAL IN
  • Right Outside Angle: 90.0 DEGREES NOMINAL
  • Material: STEEL
  • Weight Per Unit Measure: 0.560 POUNDS PER LINEAR FOOT LBS
  • Second Tip Relationship to First Tip: IDENTICAL
  • Left Side Flange Height: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Channel,structural, cataloged under National Stock Number 9520-00-277-4438, is classified within Federal Supply Class 9520 (No Item Name Available) of the Metal Bars, Sheets, and Shapes group. The primary manufacturer of record is American Bureau of Shipping. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9520-00-277-4438
Primary Part NumberABS RULES
Item NameChannel,structural
FSC / FSG9520 / 95 — No Item Name Available
ManufacturerAmerican Bureau of Shipping
StatusACTIVE
Basic Shape StyleCHANNEL
Left Side Flange Thickness0.180 INCHES NOMINAL IN
Right Outside Angle90.0 DEGREES NOMINAL
MaterialSTEEL
Weight Per Unit Measure0.560 POUNDS PER LINEAR FOOT LBS
Second Tip Relationship to First TipIDENTICAL
Left Side Flange Height0.375 INCHES NOMINAL IN
Right Side Flange Height0.375 INCHES NOMINAL IN
First Tip StyleSQUARE END
Right Flange Thickness at Base0.312 INCHES NOMINAL IN
Coating Weight2.000 OUNCES PER SQUARE FOOT OZ
Base Flange Thickness0.188 INCHES NOMINAL IN
Nondefinitive Spec/std DataA GRADE AND P CLASS
Material Document and ClassificationABS RULES, GRADE A, CLASS P ASSN STD SINGLE MATERIAL RESPONSE
Fillet Radius Where Right Flange Joins Base Flange0.250 INCHES NOMINAL IN
Fabrication MethodEXTRUDED
Length17.000 FEET MINIMUM AND 22.000 FEET MAXIMUM FT
Fillet Radius Where Left Flange Joins Base Flange0.250 INCHES NOMINAL IN
Left Outside Angle90.0 DEGREES NOMINAL
Right Side Flange Thickness0.180 INCHES NOMINAL IN
Left Flange Thickness at Base0.312 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5925-00-113-5066 INTERCHANGEABLE
Circuit Breaker
9510-00-126-1014 INTERCHANGEABLE
Bar,metal
9520-00-277-4441 INTERCHANGEABLE
Channel,structural
9520-00-277-4457 INTERCHANGEABLE
Beam,structural
9520-00-277-4459 INTERCHANGEABLE
Beam,structural
9520-00-277-4460 INTERCHANGEABLE
Beam,structural
9520-00-277-4461 INTERCHANGEABLE
Beam,structural
9520-00-277-4462 INTERCHANGEABLE
Beam,structural
9520-00-277-4463 INTERCHANGEABLE
Beam,structural
9520-00-277-4944 INTERCHANGEABLE
Angle,structural
Cross-Reference Index
Part NumberManufacturer
ABS RULES American Bureau of Shipping (USA)
MIL-S-20166 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-22698 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5925-00-113-5066INTERCHANGEABLE
CIRCUIT BREAKER
9510-00-126-1014INTERCHANGEABLE
BAR,METAL
9520-00-277-4441INTERCHANGEABLE
CHANNEL,STRUCTURAL
9520-00-277-4457INTERCHANGEABLE
BEAM,STRUCTURAL
9520-00-277-4459INTERCHANGEABLE
BEAM,STRUCTURAL
9520-00-277-4460INTERCHANGEABLE
BEAM,STRUCTURAL
9520-00-277-4461INTERCHANGEABLE
BEAM,STRUCTURAL
9520-00-277-4462INTERCHANGEABLE
BEAM,STRUCTURAL
9520-00-277-4463INTERCHANGEABLE
BEAM,STRUCTURAL
9520-00-277-4944INTERCHANGEABLE
ANGLE,STRUCTURAL
9520-00-277-4959INTERCHANGEABLE
ANGLE,STRUCTURAL
9520-00-277-5949INTERCHANGEABLE
CHANNEL,STRUCTURAL

Frequently Asked Questions

What is NSN 9520-00-277-4438?

NSN 9520-00-277-4438 is a Channel,structural, manufactured by American Bureau of Shipping, classified under FSC 9520 (No Item Name Available). Status: active.

What are the part numbers for NSN 9520-00-277-4438?

NSN 9520-00-277-4438 has 3 cross-referenced part numbers: ABS RULES (American Bureau of Shipping), MIL-S-20166 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-S-22698 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 9520-00-277-4438?

There are 12 known substitutes for 9520-00-277-4438: 5925-00-113-5066, 9510-00-126-1014, 9520-00-277-4441 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ABS RULES?

Key specifications for ABS RULES: Basic Shape Style: CHANNEL; Left Side Flange Thickness: 0.180 INCHES NOMINAL IN; Right Outside Angle: 90.0 DEGREES NOMINAL; Material: STEEL. 22 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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