S-438 ITEM 21

View detailed technical data, stock status, and sourcing information for: S-438 ITEM 21
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Federal Supply Group

Bearings

Federal Supply Classification

3130 Mounted Bearings

National Stock Number

3130-00-708-7860

Item Name Code

30556

Assigment Date

02/14/1968 (58 years ago)

1.3125 inches nominal base thickness, 11.1250 inches nominal center to center distance between mounting holes along width, 2.3750 inches nominal mounting slot length, 3.4375 inches nominal bore diameter, 0.9375 inches nominal mounting slot width

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Mounting Slot Width: 0.9375 inches nominal
Mounting Slot Length: 2.3750 inches nominal
Bore Diameter: 3.4375 inches nominal
Base Thickness: 1.3125 inches nominal
Center To Center Distance Between Mounting Holes Along Width: 11.1250 inches nominal
Housing Height: 8.2500 inches nominal
Housing Width: 15.0000 inches nominal
Lubrication Fitting Type: hydraulic
Base Length: 4.3750 inches nominal
Rolling Element Groove Quantity: 1
Alignment Type: self-aligning
Internal Fit-Up Designation: standard
Assembly Overall Length: 4.3750 inches nominal
Seal Type: labyrinth
Block Type: fixed
Shaft End Type: open
Seal Location: both ends
Load Capability Type: radial
Height From Bottom Of Base To Bore Centerline: 4.0000 inches nominal
Features Provided: ground rolling element groove
Lubrication Fitting Angle From Horizontal Centerline: 90.0 degrees nominal
Rotating Element Locking Method: direct
Mounting Hole Type: slotted
Lubrication Material: grease
Material: iron cast housing
Material: steel and wool seal
Style Designator: pillow block, solid

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
126823	Ball Bearing Unit
30F05	Ball Bearing Unit
MP55	Ball Bearing Unit
PB350-3 7-16	Ball Bearing Unit
PB350X3 7-16	Ball Bearing Unit
S-438 ITEM 21	Ball Bearing Unit
SCM3 7-16	Ball Bearing Unit
VPS355	Ball Bearing Unit

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3130-00-708-7860?

The FSCG of the NSN 3130-00-708-7860 is 3130

Does the NSN 3130-00-708-7860 have a Schedule B code assigned?

Yes, the Schedule B code is 8482991050

Does NSN 3130-00-708-7860 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 3130-00-708-7860 contain precious materials?

Precious metal content is unknown

Does NSN 3130-00-708-7860 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 3130-00-708-7860 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, Feb 14, 1968