DIN 258 Taper Pins
With External Thread
Standard Weight Chart
What Is a DIN 258 Taper Pins With External Thread
A plain taper pin (DIN 1) is one of the most reliable ways to locate two mating parts precisely, over and over, because the 1:50 taper self-centers into a reamed taper hole with almost no clearance. The drawback is extraction — once a plain taper pin is driven into a blind hole, there’s often nothing to grip or drive against to pull it back out without risking damage to the pin or the bore.
DIN 258 solves exactly that problem: the large end of the pin carries an external thread, so an extractor nut, jacking bolt, or slide hammer adapter can be threaded on and used to draw the pin straight back out along its own axis. It gives you the locational precision of a standard taper pin with a controlled, repeatable way to remove it for servicing, disassembly, or re-alignment — which matters wherever a joint needs to be periodically opened rather than pinned permanently.
Akbar Fasteners Pvt. Ltd. manufactures DIN 258 taper pins in-house at our Mumbai facility, under ISO 9001:2015, with full mill test documentation, and exports this range to over 50 countries.
Where DIN 258 Pins Genuinely Earn Their Place
Self-Centering Taper Fit
The 1:50 taper seats with near-zero radial clearance in a properly reamed hole, giving repeatable positional accuracy standard dowel pins can’t match.
Controlled, Repeatable Extraction
The external thread lets you extract the pin along its own axis using a standard nut or extractor tool, avoiding hammer damage to the pin or bore.
Full Size & Weight Reference
A published dimension and weight chart lets you plan quantity, freight, and bore reaming size before an order is placed, not after.
Multiple Material Options
Case-hardened carbon steel and stainless steel available across the size range, matched to load and corrosion environment.
DIN 258 Taper Pin Dimension & Weight Chart
Standard nominal dimensions and approximate weight by small-end diameter (d1) — the pin tapers at a constant 1:50 ratio, so length determines the large-end diameter and the reaming size needed at the small end. Weight is given per piece at a 40mm reference length; actual weight scales with the ordered length and should be recalculated for your final bill of materials.
| Small-End Dia. (d1) | External Thread | Typical Length Range | Reaming Tolerance | Taper Ratio | Approx Weight/pc @ L=40mm |
|---|---|---|---|---|---|
| 6 mm | M4 | 16 – 60 mm | h11 | 1:50 | ~0.010 kg |
| 8 mm | M5 | 18 – 70 mm | h11 | 1:50 | ~0.018 kg |
| 10 mm | M6 | 22 – 85 mm | h11 | 1:50 | ~0.028 kg |
| 13 mm | M8 | 26 – 100 mm | h11 | 1:50 | ~0.047 kg |
| 16 mm | M10 | 32 – 120 mm | h11 | 1:50 | ~0.070 kg |
| 20 mm | M12 | 40 – 150 mm | h11 | 1:50 | ~0.109 kg |
| 25 mm | M16 | 50 – 180 mm | h11 | 1:50 | ~0.170 kg |
| 30 mm | M20 | 60 – 200 mm | h11 | 1:50 | ~0.245 kg |
| 40 mm | M24 | 80 – 250 mm | h11 | 1:50 | ~0.435 kg |
| 50 mm | M30 | 100 – 300 mm | h11 | 1:50 | ~0.680 kg |
Figures shown are representative reference values in steel for quick planning purposes and may vary slightly by manufacturer tolerance and length ordered. Please confirm exact dimensions against the current DIN 258 standard document or your engineering drawing, and request our certified dimensional data sheet, before finalizing a purchase order.
Taper & Locating Pin Range
Taper Pins With External Thread
Removable taper pins in carbon and stainless steel, d1 6–50mm, custom length to drawing.
DIN 1Plain Taper Pins
Standard unthreaded taper pins for permanent or semi-permanent locating applications.
DIN 7977Taper Pins With Internal Thread
Internally threaded taper pins for blind-hole extraction where an external stud isn’t practical.
Support HardwareExtractor Nuts & Reamers
Matching extractor nuts and taper reamers supplied to complete the pin installation and removal process.
DIN 258 Technical Overview
Available Materials
- Carbon Steel Case-Hardened, Standard
- Stainless Steel 303 / 316 on Request
- Alloy Steel Higher Load Applications
- Surface Finish Bright / Black Oxide
- Custom Material To Specification
Mechanical Properties
- Surface Hardness ~58–62 HRC (case)
- Taper Tolerance Per DIN 258 h11
- Straightness Ground Finish
- Thread Class 6g Standard
- Testing MTC / NABL on Request
Available Dimensions
- Small-End Diameter d1 6 – 50 mm
- Length Custom to Drawing
- External Thread M4 – M30
- Taper Ratio Fixed 1:50
- Packaging Loose / Boxed / Palletized
Application Areas
Wherever two parts need to locate precisely and be separable for service.
Machine Tool Alignment
machine bed & housing joints
Die & Mould Sets
die halves for tooling
Gearbox & Housing Assembly
for accurate reassembly
Jigs & Fixtures
for repeatable setups
Turbine & Rotating Equipment
requiring periodic removal
Structural Steel Fabrication
bolted structural joints
Instrumentation Assembly
sensitive equipment housings
General Mechanical Assembly
maintainable assemblies
Standard Export Documentation
Prepared as standard practice for every taper pin shipment.
Mill Test Certificate (MTC)
Material composition and hardness verification for every production batch.
Certificate of Conformance
Confirms the shipment matches the purchase order specification, size, and grade in full.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown for customs clearance.
Dimensional Data Sheet
Certified taper, diameter, and length data against DIN 258 available on request before order confirmation.
Bill of Lading
Ocean or air freight shipping document confirming carrier, mode, and consignee details.
Internationally Recognised Standards Coverage
Related Fastener Grades & Standards
DIN 261 T-Head Bolts
T-slot clamping bolts for machine tool tables, with a matching standard dimension and weight chart.
View DIN 261 →Hastelloy B-3 Stud Bolts
Nickel-molybdenum alloy fastening for reducing acid and severe chemical processing service.
View Hastelloy B-3 →Stainless Steel 316 Fasteners
Corrosion-resistant option for taper pins and general fastening in washdown or humid environments.
View SS 316 →Top Nickel Fasteners Manufacturer
See our full in-house nickel alloy manufacturing and documentation capability.
View Manufacturer Page →Send Us Your
Bore Size & Length Requirement
Tell us your small-end diameter, length, and material preference — we’ll confirm the correct DIN 258 size and issue a certified dimensional data sheet with your quote. Akbar Fasteners Pvt. Ltd. responds within 24 hours.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · sales@akbarfasteners.in