H2A

Bearing Unit Housing

This page provides complete and verified information for part number H2A, NSN 3130-00-995-4635

You’ll find detailed technical specifications, product attributes, condition classification, and real-time stock availability. All data is based on official records and meets industry standards for defense, aerospace, and industrial sourcing. Whether you’re performing a parts audit, validating compliance, or preparing a purchase order, this part listing supports accurate and efficient procurement.

H2A
Federal Supply Group
Bearings
Federal Supply Classification
3130 Mounted Bearings
National Stock Number
3130-00-995-4635
Item Name Code
30559
Assigment Date
01/01/1962 (64 years ago)

An item which is an electrical rotating machine combining both control motor and tachometer generator action. The control motor and tachometer generator may be contained in the same or separate housings. It is designed for servo application where instant response to input signal is essential. It is generally used in circuits where the output potential from the tachometer generator is fed back to prevent excessive oscillation and for assuring high stability in a servo loop. Excludes:dynamotor; and motor-generator.

0.5000 inches nominal base thickness, 1.7500 inches nominal bore diameter, 1.7500 inches nominal center to center distance between mounting holes along width, 2.5000 inches nominal housing height, 0.5000 inches nominal mounting hole diameter

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Mounting Hole Diameter
0.5000 inches nominal
Bore Diameter
1.7500 inches nominal
Base Thickness
0.5000 inches nominal
Center To Center Distance Between Mounting Holes Along Width
1.7500 inches nominal
Housing Height
2.5000 inches nominal
Housing Length
1.5000 inches nominal
Housing Width
3.5000 inches nominal
Lubrication Fitting Type
hydraulic
Base Length
1.5000 inches nominal
Shaft End Type
open
Height From Bottom Of Base To Bore Centerline
1.7500 inches nominal
Lubrication Fitting Angle From Horizontal Centerline
90.0 degrees nominal
Mounting Hole Type
round, unthreaded
Special Features
mounting holes are parallel to the shaft bore,counterbore 1/2-13 nc on one side
Material
copper alloy overall
Style Designator
pillow block, solid

Classification Data

Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.

Type of Item Identification
K - Full descriptive - reference item identification
Demilitarization
A - Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Criticality
X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Federal Item Identification Guide
A093A0
Precious Metals Indicator
U - Precious metal content is unknown
Pseudo Item Name Code
0030559
Hazardous Material Indicator
N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Schedule B Code
8482991050

Freight Information

Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.

Major Organizational Entity
XX
National Motor Freight Classification Item Number
123070
National Motor Freight Classification Sub-Item Number
X
Uniform Freight Classification Item Number
64100
National Motor Freight Class Rating
R - 65.0
Water Commodity
742 - Bearings
Type of Cargo
Z - No special type of cargo code applicable
Special Hand
9 - Other or no special handling required (sh)
Air Dimension
A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
Air Commodity
VZ -
National Motor Freight Description
housings bearing and shaft steel

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for H2A

What is the FSCG of the NSN 3130-00-995-4635?
The FSCG of the NSN 3130-00-995-4635 is 3130
Does the NSN 3130-00-995-4635 have a Schedule B code assigned?
Yes, the Schedule B code is 8482991050
Does NSN 3130-00-995-4635 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 3130-00-995-4635 contain precious materials?
Precious metal content is unknown
Does NSN 3130-00-995-4635 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 3130-00-995-4635 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962

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