Approved Vendor

MIL. Spec. Key-Locking Insert

Manufacturer part: 93904A221

These inserts are made to stringent military specifications. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. Inserts may be mildly magnetic. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.

✓ Normalized specifications✓ Supplier verified
Availability
In stock
Lead time
Contact supplier
Sold by
Approved Vendor

Technical data

Specifications

Normalized product attributes for faster comparison and sourcing.

ECCN
EAR99
RoHS
RoHS 3 (2015/863/EU) Compliant
DFARS
Specialty Metals Compliant (252.225-7009)
REACH
REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
End Type
Open
Material
18-8 Stainless Steel
For Use In
Metal
Schedule B
731819.0000
Thread Fit
Class 3B
Passivation
Passivated
Thread Size
1/4,"-28
Thread Type
UNJF
For Tap Type
Standard (UN)
Comparable To
Keensert®
Drill Bit Size
29/64,"
Thread Spacing
Coarse
Related Product
Installation Tools
Installed Length
3/8,"
Tensile Strength
Not Rated
Thread Direction
Right Hand
USMCA Qualifying
No
Country of Origin
United States
Specifications Met
MS51832-202
For Tap Thread Size
1/2,"-13
Threaded Insert Type
Key Locking
External Locking Type
Key
System of Measurement
Inch
Number of Locking Keys
4
For Maximum Hole Diameter
0.457"
For Min. Material Thickness
3/8,"
Key-Locking Insert Wall Style
Thick

Supplier coverage

Compare available offers

Review pricing, availability, and fulfillment details from verified distributors.

SupplierSupplier SKUPriceStockLead timeType
Approved Vendor93904A221Request priceContact supplierContact supplierAuthorized · US distributor

Prices and availability are provided by suppliers and may change.