PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8211612WRegister,air

Hart & Cooley, Inc. · NSN 4520-01-261-9811 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-261-9811 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-261-9811. Primary manufacturer part number: 8211612W.
Features
  • Register,air — FSC 4520
  • Grille Quantity: 1
  • Frame Type: FLAT
  • Blade Spacing: 1.250 INCHES IN
  • Material: STEEL
  • Shape: RECTANGULAR
  • Bar Spacing in Inches: 0.667
  • Bar Adjustment Method: HAND
Applications
  • Applications requiring Steel construction
General Description

The Register,air, cataloged under National Stock Number 4520-01-261-9811, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Hart & Cooley, Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-261-9811
Primary Part Number8211612W
Item NameRegister,air
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerHart & Cooley, Inc.
StatusACTIVE
Grille Quantity1
Frame TypeFLAT
Blade Spacing1.250 INCHES IN
MaterialSTEEL
ShapeRECTANGULAR
Bar Spacing in Inches0.667
Bar Adjustment MethodHAND
Bar AdjustabilityADJUSTABLE
Blade Vertical Surface Axis PositionHORIZONTAL
Grille Bar PositionVERTICAL
Blade Quantity5
Frame RemovabilityNONREMOVABLE
Deflector Blade Operating MethodHAND-LEVER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-098-269275027 INTERCHANGEABLE
Gasket,oil Pump Cov
Honeywell International Inc. Div Aerospace - Torrance
2520-01-012-2141 INTERCHANGEABLE
Parts Kit,driving Axle Different
4720-01-161-016375027 INTERCHANGEABLE
Hose Assembly,nonmetallic
DP Manufacturing Inc.
5331-01-169-246475027 INTERCHANGEABLE
O-Ring
Paccar Winch Inc Dba Paccar Winch Division
Cross-Reference Index
Part NumberManufacturer
T62-16X12 Hart and Cooley Mfg Co of Canada Ltd (CAN)
8211612W PRIMARY Hart & Cooley, Inc. (USA)
75027 Hart & Cooley, Inc. (USA)
821 Hart & Cooley, Inc. (USA)
Related Parts
5330-00-098-2692INTERCHANGEABLE
GASKET,OIL PUMP COV
75027
2520-01-012-2141INTERCHANGEABLE
PARTS KIT,DRIVING AXLE DIFFERENT
4720-01-161-0163INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
75027
5331-01-169-2464INTERCHANGEABLE
O-RING
75027

Frequently Asked Questions

What is NSN 4520-01-261-9811?

NSN 4520-01-261-9811 is a Register,air, manufactured by Hart & Cooley, Inc., classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-261-9811?

NSN 4520-01-261-9811 has 4 cross-referenced part numbers: T62-16X12 (Hart and Cooley Mfg Co of Canada Ltd), 8211612W (Hart & Cooley, Inc.), 75027 (Hart & Cooley, Inc.), 821 (Hart & Cooley, Inc.).

What NSN replaces 4520-01-261-9811?

There are 4 known substitutes for 4520-01-261-9811: 5330-00-098-2692, 2520-01-012-2141, 4720-01-161-0163 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8211612W?

Key specifications for 8211612W: Overall Depth: 1.812 INCHES NOMINAL IN; Grille Quantity: 1; Frame Type: FLAT; Blade Spacing: 1.250 INCHES IN. 17 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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