S520M
Ball Bearing Unit
This page provides complete and verified information for part number S520M, NSN 3130-00-159-1478
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.
Federal Supply Group
Bearings
Federal Supply Classification
3130 Mounted Bearings
National Stock Number
3130-00-159-1478
Item Name Code
30556
Assigment Date
01/01/1961 (65 years ago)
0.5625 inches nominal mounting slot width, 0.7500 inches nominal base thickness, 5.0000 inches nominal center to center distance between mounting holes along width, 1.2500 inches nominal bore diameter, 0.7500 inches nominal mounting slot length
Characteristics
Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.
- Mounting Slot Width
- 0.5625 inches nominal
- Mounting Slot Length
- 0.7500 inches nominal
- Bore Diameter
- 1.2500 inches nominal
- Base Thickness
- 0.7500 inches nominal
- Center To Center Distance Between Mounting Holes Along Width
- 5.0000 inches nominal
- Housing Height
- 3.6250 inches nominal
- Housing Width
- 6.5625 inches nominal
- Lubrication Fitting Type
- pipe plug
- Base Length
- 2.0156 inches nominal
- Rolling Element Groove Quantity
- 1
- Alignment Type
- self-aligning
- Internal Fit-Up Designation
- standard
- Assembly Overall Length
- 1.9062 inches nominal
- Seal Type
- labyrinth
- Block Type
- fixed
- Shaft End Type
- open
- Seal Location
- both ends
- Collar Location
- one end
- Load Capability Type
- radial
- Height From Bottom Of Base To Bore Centerline
- 1.8125 inches nominal
- Features Provided
- ground rolling element groove
- Lubrication Fitting Angle From Horizontal Centerline
- 90.0 degrees nominal
- Rotating Element Locking Method
- setscrew locking collar
- Mounting Hole Type
- slotted
- Lubrication Material
- grease
- Material
- iron cast housing
- Material
- steel seal
- 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
- Demilitarization
- Criticality
- Federal Item Identification Guide
- Precious Metals Indicator
- Pseudo Item Name Code
- Hazardous Material Indicator
- Schedule B Code
- 1 - Full descriptive item identification
- 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.
- X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
- A093A0
- A - Item does not contain precious metal.
- 0030556
- N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
- 8482991050
Freight Information
Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.
- Major Organizational Entity
- National Motor Freight Classification Item Number
- National Motor Freight Classification Sub-Item Number
- Uniform Freight Classification Item Number
- National Motor Freight Class Rating
- Water Commodity
- Type of Cargo
- Special Hand
- Air Dimension
- Air Commodity
- National Motor Freight Description
- XX
- 114690
- Z
- 58770
- W - Rating variable
- 742 - Bearings
- Z - No special type of cargo code applicable
- 9 - Other or no special handling required (sh)
- A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
- VZ -
- balls/rolls bearing
FAQs
Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for S520M
What is the FSCG of the NSN 3130-00-159-1478?
The FSCG of the NSN 3130-00-159-1478 is 3130
Does the NSN 3130-00-159-1478 have a Schedule B code assigned?
Yes, the Schedule B code is 8482991050
Does NSN 3130-00-159-1478 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 3130-00-159-1478 contain precious materials?
Item does not contain precious metal.
Does NSN 3130-00-159-1478 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 3130-00-159-1478 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961
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