Industrial Fastener · Threaded Rods Series
Tap End Stud
A tap end stud has an interference (Class 5) fit on one end designed to be permanently installed in a cast iron or aluminum tapped hole, with a standard (Class 2A or 6g) thread on the nut end. Once installed, only the nut is removed for assembly access — preserving the relatively soft parent thread.
Product Overview
Tap End Stud sourcing essentials
A tap end stud has an interference (Class 5) fit on one end designed to be permanently installed in a cast iron or aluminum tapped hole, with a standard (Class 2A or 6g) thread on the nut end. Once installed, only the nut is removed for assembly access — preserving the relatively soft parent thread.
DIN 938, DIN 939, DIN 835, ASME B18.31.2
Material per requirement
Engine blocks, pump housings, valve bodies
Inspection records, lot labels, certificate options, and destination-ready packing.
Technical Data
Specification range
Final dimensions, mechanical properties, finish, and packing are confirmed against the RFQ and applicable standard.
| Tap End Length | 1d (steel), 1.25d (cast iron), 2d (aluminum) — per parent material |
|---|---|
| Standards | DIN 938, DIN 939, DIN 835, ASME B18.31.2 |
| Diameter Range | M5 – M30 |
| Application | Engine blocks, pump housings, valve bodies |
Common surface finishes
Select an option to review its sourcing note. Exact coating system, thickness, and corrosion requirement are confirmed with the order.
Quality Control
Checked before consolidation and export
Each order is matched to the specified standard and verified at practical control points before shipment.
RFQ confirmation
Standard, size, grade, pitch, finish, certificates, packing, and destination are locked before production.
Lot verification
Critical dimensions, thread fit, markings, finish appearance, and packing labels are sampled and recorded.
Shipment approval
Photos and required reports are organized before consolidated loading and export documentation.
Buyer Questions
Frequently asked questions
Why does aluminum require a longer tap engagement?
Aluminum has lower shear strength than steel or cast iron, so more thread engagement is needed to develop equivalent pullout strength. Standard practice is 2 × diameter engagement in aluminum, vs 1 × diameter in steel and 1.25 × diameter in cast iron.
Ready to quote Tap End Stud?
Send the standard, size, grade, finish, quantity, packing requirement, and destination. Availability and lead time are confirmed with the inquiry.