PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DDHEMHRegister,air

Dynamics Corp of America Anemostat-West Div · NSN 4520-00-077-6507 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-077-6507 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-077-6507. Primary manufacturer part number: DDHEMH.
Features
  • Register,air — FSC 4520
  • Material: STEEL
  • Grille Quantity: 1
  • Bar Adjustability: ADJUSTABLE
  • Bar Adjustment Method: KEY
  • Frame Type: FLAT
  • Bar Spacing in Inches: 0.500
  • Grille Bar Position: VERTICAL AND HORIZONTAL
Applications
  • Applications requiring Steel construction
General Description

The Register,air, cataloged under National Stock Number 4520-00-077-6507, 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 Dynamics Corp of America Anemostat-West Div. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN4520-00-077-6507
Primary Part NumberDDHEMH
Item NameRegister,air
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerDynamics Corp of America Anemostat-West Div
StatusACTIVE
MaterialSTEEL
Grille Quantity1
Bar AdjustabilityADJUSTABLE
Bar Adjustment MethodKEY
Frame TypeFLAT
Bar Spacing in Inches0.500
Grille Bar PositionVERTICAL AND HORIZONTAL
Frame RemovabilityNONREMOVABLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5910-00-009-6732 INTERCHANGEABLE
Capacitor,fixed,electrolytic
6680-00-092-5609S126 INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5305-00-177-5552S126 INTERCHANGEABLE
Screw,cap,hexagon Head
Cummins Inc.
5930-00-200-8063S126 INTERCHANGEABLE
Adapter,switch Actuator
Simmonds Precision Products Inc
5330-00-345-2263S12-6 INTERCHANGEABLE
Retainer,packing
Arkwin Industries, Inc. Dba Arkwin Industries Inc
5998-00-460-04426723-00401 INTERCHANGEABLE
Circuit Card Assembly
Bae Systems (operations) Limited
3020-00-528-9189S-126 INTERCHANGEABLE
Sprocket Wheel
Imperial Floor Covering Inc
3110-00-831-6616S126 INTERCHANGEABLE
Adapter Sleeve,bearing
Skf Usa Inc.
5930-01-082-3727 INTERCHANGEABLE
Switch,sensitive
Cross-Reference Index
Part NumberManufacturer
DDHEMH Dynamics Corp of America Anemostat-West Div (USA)
S126 Dynamics Corp of America Anemostat-West Div (USA)
222DDHEMH Dynamics Corp of America Anemostat-West Div (USA)
Related Parts
5910-00-009-6732INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
6680-00-092-5609INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
S126
5305-00-177-5552INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
S126
5930-00-200-8063INTERCHANGEABLE
ADAPTER,SWITCH ACTUATOR
S126
5330-00-345-2263INTERCHANGEABLE
RETAINER,PACKING
S12-6
5998-00-460-0442INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6723-00401
3020-00-528-9189INTERCHANGEABLE
SPROCKET WHEEL
S-126
3110-00-831-6616INTERCHANGEABLE
ADAPTER SLEEVE,BEARING
S126
5930-01-082-3727INTERCHANGEABLE
SWITCH,SENSITIVE

Frequently Asked Questions

What is NSN 4520-00-077-6507?

NSN 4520-00-077-6507 is a Register,air, manufactured by Dynamics Corp of America Anemostat-West Div, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-077-6507?

NSN 4520-00-077-6507 has 3 cross-referenced part numbers: DDHEMH (Dynamics Corp of America Anemostat-West Div), S126 (Dynamics Corp of America Anemostat-West Div), 222DDHEMH (Dynamics Corp of America Anemostat-West Div).

What NSN replaces 4520-00-077-6507?

There are 9 known substitutes for 4520-00-077-6507: 5910-00-009-6732, 6680-00-092-5609, 5305-00-177-5552 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of DDHEMH?

Key specifications for DDHEMH: Material: STEEL; Special Features: DESIGNED W/OPPOSED ACTION LOUVERS AND BARS ADJUSTABLE TO 45 DEG AND FURNISHED W/SPONGE RUBBER GASKET ON INSIDE OF STEEL FRAME; Grille Quantity: 1; Bar Adjustability: ADJUSTABLE. 11 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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