Custom Precision Pins

Hartford Technologies manufactures custom precision pins, dowels and shafts for OEM and Tier 1/2 production programs. Materials expertise, in-house design capability and a controlled quality system produce cylindrical components that perform in high-temperature, high-speed and high-load conditions as well as in less demanding environments.

Pins are produced in chrome steel, carbon steel and 300 and 400 series stainless steel, in diameters from .031″ (.787mm) to 1.000″ (25.4mm) and lengths from .125″ (3.17mm) to 3.000″ (76.2mm), held to +/-0.0001″ on diameter. Available as individual parts or assembled components, in clean and ultra-clean condition.

Diameter .031" to 1.000" Length .125" to 3.000" +/-0.0001" diameter tolerance DIN G2 capable

Type of Custom Precision Pins We Manufacture

Compare Steel Types

Grade	Corrosion resistance	Hardness (Rockwell)	Magnetic	Food / medical safe
Chrome Steel	None	C 60-67	Yes	No
Carbon Steel	None	C 60 min case	Yes	No
AISI 304 (18-8) / 302	Excellent	B 75-95 annealed C 25-39 not annealed	Low	Yes
AISI 316	Best	B 75-95 annealed C 25-39 not annealed	Very Low	Yes (FDA Applications)
AISI 420	Good	C 48-52	Yes	No
AISI 430	Good	B 75-95 annealed	Yes	No
AISI 440C	Good	C 58-62	Yes	No
CorrTech	Very Good	C 58-62	Yes	No

Sizes, Grades and Tolerances

Specification	Inch	Metric
Diameter	.031″ to 1.000″ (knurled pins up to 3/8″)	.787mm to 25.4mm
Length	.125″ to 3.000″ (knurled pins up to 3″)	3.17mm to 76.2mm
Diameter Tolerance	+/-0.0001″	+/-0.0025mm
Length Tolerance	+/-0.002″	+/-0.05mm
Standard Tolerance Class	Can hold DIN G2 tolerances
Finish (Pins and Shafts)	Up to 6 RMS

Why Choose Hartford Technologies for Custom Pins

Over 100 years of precision manufacturing

Trusted by OEMs in Aerospace, Medical, Automotive, and Industrial markets since 1926
Stocking of pins for quick releases

Standard sizes available for immediate shipment. $400 minimum order for stock items.
Custom Engineered Solutions

Complex assemblies and non-standard sizes are quoted individually.

Industries We Serve with Custom Precision Pins

Hartford pins are specified into production programs across the industries below. If your application is not listed, it is still worth a conversation. Pins are among the most widely specified components we make.

Automotive

High-volume programs where tolerance and repeatability drive assembly quality
Aerospace

Tight-tolerance location and alignment components with full material traceability
Industrial and Manufacturing

Motion and load-bearing components built for duty cycles measured in years
Industrial and Manufacturing

Motion and load-bearing components built for duty cycles measured in years
Electronics

Small-diameter pins where consistent finish and clean condition matter
Small Motors and Timers

Precision shafts and pins for compact, high-cycle mechanisms
Furniture and Consumer Goods

High-volume dowel and location pins at consistent fit | Dowel and location pin assembly

Lead Times and Minimum Order Value

Hartford Technologies manufactures precision pins to specification for high-volume production programs. No standard pin sizes are held in stock, so every order is produced to your print.

Standard lead time is 14 to 16 weeks. Expedited production is available in 6 to 8 weeks and is quoted on request.
Minimum order value is $1,500. Minimum quantity varies with diameter, length, material and end configuration, so orders are qualified on value rather than piece count. Typical production runs are 10,000 pieces or more.

Not suitable for craft, hobby or small-quantity applications.