A2 Tool Steel Die Exit Block, 1.240 x 0.990 x 0.875 in, Nitrided

A2 tool steel exit die block in inches: mirror polished track area, M5 SHCS counterbore, 2X Ø.1194 dowels at +/-0.001 in, plasma nitrided, ground datums. Quote in 24 hours, no MOQ.

A2 Tool Steel Exit Die Block, Plasma Nitrided with Mirror Polished Track

General Industrial Components

An L stepped extrusion die block for heated tooling assemblies. The flow track is polished mirror before nitriding, the datums are finish ground after, and the three hole line holds plus or minus 0.001 in.

Custom to drawing±0.005 mm standard toleranceQuote in 24 hNo MOQISO 9001 · ISO 13485 · AS9100D

Request a Quote for This Part

Or email drawings to kgl@kglmfc.com

Relevant Capabilities

CNC Milling Surface Treatment/Heat Treatment

Materials

Materials/Cnc Carbon Steel

Key Specifications

Parameter	KGL Capability
Material	AISI A2 tool steel (1.2363), HRC 28-32, plasma nitrided
Process	Six face CNC milling, drilling and boring of the hole line, hand and ultrasonic mirror polishing of the track, plasma nitriding, post treatment surface grinding
Dimensions	1.240 x 0.990 x 0.875 in
Hole line	M5 SHCS cbore Ø.384 ↧ .213, 2X Ø.1194 dowels ↧ .24, position +/-0.001 in
Track finish	Mirror polish, microscope verified
Inspection	CMM 100 percent on steps, hole line, and track centerline; pin gauges; M5 gauges
Tolerance	±0.005 mm standard on metals, engineering plastics, and carbon fiber composite
Certifications	ISO 9001:2015, ISO 13485:2016, AS9100D
Capacity	100+ CNC machines including 11 five-axis centers
MOQ	No MOQ; 1-piece prototypes supported
Quote	Within 24 hours for complete 2D/3D files

About This Part

Extrusion die blocks fail on their flow track, so the track gets the discipline: the polish area is hand and ultrasonic finished to a mirror before plasma nitriding, because nitriding after polishing locks the surface in without leaving grinding marks for material to hang on.

The block measures 1.240 by 0.990 by 0.875 in with an L shaped step and 45 degree lead chamfers. The top face carries a three hole line: an M5 SHCS counterbored through hole at Ø.384 by .213 deep, flanked by 2X Ø.1194 in clearance dowel holes .24 deep, all positioned within plus or minus 0.001 in across the 0.990 in width.

Material is AISI A2, 1.2363, through hardened to HRC 28 to 32 and plasma nitrided for surface hardness. Datum faces A and B are finish ground after nitriding to remove any treatment distortion. Inspection runs the CMM on 100 percent of step perpendicularity, the three hole line, and the track centerline, with Ø3.0 mm pin gauges and M5 gauges on the holes and a microscope sample on the track polish.

This part family supports the Industrial Parts industry. Read how KGL machines parts for that sector, then send your drawing for a quote.

Why Machine It at KGL

Five-Axis Fleet

100+ CNC machines including 11 five-axis centers run complex geometry in single setups, so tolerances do not stack up across refixturing.

Verified Accuracy

±0.005 mm standard on metals, plastics, and carbon fiber composite, verified on Hexagon and Zeiss CMMs (0.0015 mm accuracy).

Fast Prototypes

Engineering feedback with every quotation; prototype parts typically machined in 15 to 25 days.

One Supplier, End to End

Material sourcing, machining, heat treatment coordination, finishing, CMM inspection and export packaging under one roof.

Part-Specific Advantages

Mirror polished flow track, finished before nitriding
Three hole line at plus or minus 0.001 in over 0.990 in width
2X Ø.1194 in dowel holes, .24 in deep, pin gauged
A2 tool steel HRC 28 to 32, plasma nitrided
Datum faces A and B finish ground after treatment

Typical Applications

Exit and guide blocks in extrusion and forming dies
Heated mold assembly insert blocks
Wear surfaces requiring nitrided mirror finishes

Commercial Terms

Commercial	Detail
MOQ	No MOQ; 1-piece prototype supported
Quote	Within 24 hours for complete 2D/3D files
Terms	EXW / FOB Shenzhen
Certifications	ISO 9001:2015
Packaging	Individual bubble wrap, export carton or wooden case
Lead Time	Prototypes 7 to 15 days; production scheduled by volume

Common Questions

Why polish before nitriding?

Nitriding grows and hardens the surface it touches. Polish first and the treatment locks in the mirror; polish after and you are re cutting a hardened surface and risking the geometry.

Why grind the datums after treatment?

Nitriding can move a block a few tenths. Grinding datums A and B after treatment gives the assembly a verified reference regardless of what the furnace did.