PROTO Starting Punch: 1/8 in Tip Dia, 5/16 in Shank Wd, 5 1/4 in Overall Lg, Hexagon
The PROTO Starting Punch (SKU 3R121, MPN J505/16) is a pin loosening punch with a 1/8 in tip diameter, 5/16 in shank width, and 5 1/4 in overall length. It features a hexagon, flat, SAE design. 3G Electric interprets…
SKU 3G-OTH-735386
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Product Description
The PROTO Starting Punch (SKU 3R121, MPN J505/16) is a pin loosening punch with a 1/8 in tip diameter, 5/16 in shank width, and 5 1/4 in overall length. It features a hexagon, flat, SAE design. 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments — and far more — with specialist depth in combustion, pumps and controls as an authorised distributor.
Frequently Asked Questions
What is a PROTO Starting Punch used for?
A PROTO Starting Punch is used to initially drive out pins, dowels, and rivets in metalworking and maintenance. Its 1/8 in tip diameter and flat, hexagon SAE design provide precise alignment and controlled striking force for loosening stuck fasteners in industrial equipment.
What are the specifications of the PROTO J505/16 Starting Punch?
The PROTO J505/16 Starting Punch has a 1/8 in tip diameter, 5/16 in shank width, and 5 1/4 in overall length. It features a hexagon, flat, SAE design. This pin loosening punch is made by PROTO and is suitable for general industrial striking tasks.
Where to buy a PROTO Starting Punch worldwide?
3G Electric supplies the genuine PROTO Starting Punch (MPN J505/16) worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source and deliver this tool across 14 departments and beyond.
How to select the right starting punch size?
Select a starting punch with a tip diameter slightly smaller than the pin you need to drive. For the PROTO J505/16, the 1/8 in tip suits small pins. Ensure the shank width (5/16 in) fits your hammer face. Always match the punch type to the fastener and material to avoid damage.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO pin loosening punches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
