01
Confirm the pierced feature
Provide the perforation geometry, tolerance, sheet material and component or tooling print.
Piercing & Hole Punches · DIN 9844
#577 Round
Piercing Punches
DIN 9844 Type B round piercing tooling for sheet-steel perforation applications, with stepped geometry, published h6 / h7 fits and a supporting-flange head arrangement for moving punch holding devices.
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Application note: published catalog specifications are shown below. Final dimensions, material availability, head geometry, finish and manufacturing requirements are confirmed during quotation.
Series#577
StandardDIN 9844
TypeType B
Published Fitsd1 · h6 / d2 · h7
Direct Product Definition
A DIN 9844 Type B round piercing punch with stepped geometry for moving punch holding devices.
The Universal Punch #577 is identified on the dedicated catalog sheet as a DIN 9844 Type B round piercing punch for press tools used mainly in piercing and cutting perforations into sheet steel.
The catalog describes this design for moving punch holding devices in the die. The drawing adds a reduced step at the working end and publishes separate d1 h6 and d2 h7 fits, while retaining the supporting-flange head concept described for this DIN 9844 family.
Product Series#577
Tool TypeRound Piercing Punch
Published StandardDIN 9844 Type B
Published Fitsd1 · h6 / d2 · h7
MaterialsHSS / ASP30
Application Selection
Use #577 when the holder design calls for DIN 9844 Type B stepped geometry.
Selection should follow the component print, punch-holder design, required diameters, fits and material rather than the series number alone.
02
Confirm the stepped holder geometry
Verify that the die and holding arrangement require the Type B stepped profile and supporting-flange geometry shown on the #577 drawing.
03
Confirm fits & dimensions
Specify d1, d2, d3, d4, l1 and l2, together with any print-specific fit, finish, quantity and documentation requirements.
Published Technical Data
#577 specifications
| Series | #577 |
|---|---|
| Tool type | Round piercing punch with DIN 9844 Type B stepped geometry and supporting-flange head configuration. |
| Published standard | DIN 9844 Type B. |
| Range of application | Press tools used mainly for piercing/cutting perforations into sheet steel. |
| Ordering dimensions | d1, d2, d3, d4, l1 and l2. |
| Published fits | d1: h6; d2: h7. |
| Drawing callouts | d3 −0.1 mm; d4 = d2 with +0.5 / 0 shown; l1 +0.5 mm; l2 +0.5 mm at the reduced step; a +0.2 / 0 head-width callout; 0.01 to datum B and 0.005 to datum B geometric-control callouts; Rt = 1 and Rt = 2.5 surface-texture callouts are shown. |
| Published materials | HSS — High Speed Steel; ASP30 — powder-metallurgy manufactured High Speed Steel. |
| Hardness — HSS | Shaft HRC 62–64; head HRC 45–55. |
| Hardness — ASP30 | Shaft HRC 65–67; head HRC 48–55. |
| Holder design note | The catalog describes the punch for moving punch holding devices and notes the supporting flange at the head for stripping piercing particles or strips without plastically deforming the punch holding plate. |
| Finish | Hardened, annealed, cylindrical head precision ground; the shaft is plunge-cut ground over its length including the underside of the head, with the head surface ground. |
Configuration control: the dedicated #577 drawing and published tables are presented here as catalog data. Final dimensions, fits, head geometry, surface finish and manufacturing requirements should be confirmed against current Universal Punch documentation during quotation.
Catalog Fit / Tolerances
Published d1 h6 and d2 h7 tolerances.
The #577 catalog publishes separate fit tables for d1 and d2. Values below preserve the catalog deviations while presenting the ranges in a clean HTML format.
d1 · h6
| Fit | Published nominal d1 range | Upper deviation | Lower deviation |
|---|---|---|---|
| h6 | 0.50–3.00 mm Ø | 0 mm | −0.006 mm |
| h6 | >3.00–6.00 mm Ø | 0 mm | −0.008 mm |
| h6 | >6.00–10.00 mm Ø | 0 mm | −0.009 mm |
| h6 | >10.00–15.90 mm Ø | 0 mm | −0.011 mm |
d2 · h7
| Fit | Published nominal d2 sizes / range | Upper deviation | Lower deviation |
|---|---|---|---|
| h7 | 2.0 + 2.5 mm Ø | 0 mm | −0.006 mm |
| h7 | 3.2 + 4 + 5 mm Ø | 0 mm | −0.008 mm |
| h7 | 6.3 + 8 + 10 mm Ø | 0 mm | −0.009 mm |
| h7 | 12.5–16 mm Ø | 0 mm | −0.011 mm |
Catalog notation: the d2 h7 table lists several discrete nominal sizes in grouped columns. Final nominal dimensions and fit applicability should be verified against the current controlled drawing during quotation.
Engineering Drawing Callouts
Additional values shown on the #577 drawing
| Drawing feature | Published callout |
|---|---|
| d3 head diameter | −0.1 mm |
| d4 / d2 relationship | d4 = d2 with +0.5 / 0 shown on the drawing. |
| l1 length | +0.5 mm |
| l2 reduced-step length | +0.5 mm |
| Head-width callout | +0.2 / 0 mm is shown at the head. |
| Geometric controls | 0.01 relative to datum B and 0.005 relative to datum B are shown on the drawing. |
| Surface texture | Rt = 1 and Rt = 2.5 callouts are shown on the drawing. |
Drawing authority: use the current controlled Universal Punch drawing to confirm final fit, tolerance, surface-texture and geometric-control requirements for manufacture.
Material Selection
HSS and ASP30 options published for the #577 Type B configuration.
High Speed Steel
The #577 catalog lists High Speed Steel for the DIN 9844 Type B punch.
- Shaft hardness: HRC 62–64
- Head hardness: HRC 45–55
- Catalog guidance describes HSS for high-strength or difficult-to-work materials.
Powder-metallurgy high-speed steel
The catalog also lists ASP30 and describes it as a powder-metallurgy manufactured high-speed steel.
- Shaft hardness: HRC 65–67
- Head hardness: HRC 48–55
- The catalog notes increased life expectancy in an example such as piercing stainless material.
Manufacturer Configuration
Configure #577 from the print, stepped geometry and holder requirement.
Define the perforation
Provide the component print, pierced feature, tolerance, sheet material and relevant production requirements.
Specify d1, d2, d3 and d4
Provide the shaft, step and head-related diameters shown on the DIN 9844 Type B drawing.
Specify l1 and l2
Include the published length dimensions and any print-specific tolerance requirements.
Confirm fits & holder design
Identify the required d1 h6 and d2 h7 dimensions and provide the punch-holding / pressure-plate context.
Select material
Identify HSS or ASP30 requirements and any application-specific material considerations.
Confirm quantity & documentation
Include quantity, drawing revision, inspection requirements, documentation and packaging needs.
Piercing Punch Family
Compare #577 with the Universal Punch 570–577 piercing series.
| Series | Published Family / Standard | Status |
|---|---|---|
| #570 | DIN 9861 Type D + DA | Related product |
| #571 | DIN 9861 Type C + CA family | Related product |
| #572 | ISO 8020 Type A | Related product |
| #573 | ISO 8020 Type B | Related product |
| #574 | ISO 8020 Type E | Related product |
| #575 | ISO 8020 Type F | Related product |
| #576 | DIN 9844 Type A | Related product |
| #577 | DIN 9844 Type B | Current page |
Technical RFQ Checklist
Send the complete #577 application.
A drawing and holder context allow Universal Punch to confirm Type B geometry, d1 h6 / d2 h7 fits, material, dimensional requirements and order documentation before manufacture.
- Component / tooling drawing
- d1 dimension / h6 requirement
- d2 dimension / h7 requirement
- d3 head-related diameter
- d4 head / support diameter
- l1 and l2 lengths
- Sheet / work material
- Punch-holder / pressure-plate context
- HSS or ASP30 requirement
- Quantity
- Finish / inspection requirements
- Drawing revision / documentation needs
Technical FAQ
#577 questions and direct answers
What is the Universal Punch #577?
The #577 is a DIN 9844 Type B round piercing punch used mainly for piercing and cutting perforations into sheet steel. The dedicated catalog sheet describes the design for moving punch holding devices.
What fits are published for #577?
The catalog identifies d1 with an h6 fit and d2 with an h7 fit.
What dimensions are specified when ordering #577?
The catalog ordering line identifies d1, d2, d3, d4, l1 and l2.
What materials and hardness ranges are published for #577?
The catalog lists HSS and ASP30. HSS hardness is HRC 62–64 for the shaft and HRC 45–55 for the head. ASP30 hardness is HRC 65–67 for the shaft and HRC 48–55 for the head.
How does #577 differ from #576?
Both are DIN 9844 family punches. The #577 Type B drawing adds a stepped shaft configuration and publishes separate d1 h6 and d2 h7 fits, whereas #576 is the DIN 9844 Type A configuration.
Universal Punch Application Review
Configure #577 around the actual DIN 9844 Type B stepped-holder and piercing requirement.
Send Universal Punch the print, d1, d2, d3, d4, l1 and l2 dimensions, required d1 h6 / d2 h7 fits, sheet material, punch-holder context, material requirement, quantity, and any inspection or documentation requirements so the current #577 configuration can be reviewed before quotation.