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3G Electric
PROTO J505/16 Hexagon Flat SAE Pin Loosening Punch - Pin Loosening Punches
PROTOPin Loosening Punches

PROTO J505/16 Hexagon Flat SAE Pin Loosening Punch

The PROTO Starting Punch (SKU J505/16, 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.

SKU 3G-OTH-735386

Also listed as: J50516 · J505 16 · J505-16

Brand
PROTO
Item
J505/16 Hexagon Flat SAE Pin Loosening Punch
Part Number
J505/16
Category
Pin Loosening Punches
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Technical Specifications

PROTO
Manufacturer Part Number
J505/16
Type
Hexagon, Flat, SAE
Overall Lg
5 1/4 in
Shank Wd
5/16 in

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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Starting Punch (SKU J505/16, 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.

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 PROTO
Industrial maintenance — PROTO J6014CXCERT micrometer torque wrench for tightening fasteners to 50–250 ft-lb with tether capability.
Assembly operations — PROTO J6345A electronic torque wrench for 5–50 ft-lb control with audible and visual indicators.
Plumbing and mechanical — PROTO J812HD straight pipe wrench with 2 in jaw capacity for gripping and turning pipes.
Precision fastening — PROTO J61929 multi-bit screw and nut driver kit with 26 alloy steel bits for assembly and maintenance.
Tool organization — PROTO JUC3743-3SG heavy-duty utility cart with drawers, power strip, and padlock for shop floor use.
Metric fastener service — PROTO JSCVM-20SB 20-piece ratcheting combination wrench set covering 6 mm to 32 mm.
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PROTO 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.

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