Special and Standard Stud Bolts for OEMs and Distributors

Kelko Products manufactures a complete line of special as well as standard stud bolts for both OEMs and distributors. Our custom stud bolts are durable and can be made resistant to corrosion. We have the capability to manufacture stud bolts with diameters ranging from 1/4" through 2". Our stud bolts are available in a range of carbon steel & stainless steel grades plus silicon, bronze, and Monel®.

 

We also stock color-coded materials in different SAE J429 and ATSM grades. Stud bolts can be precision machined to have different types of threads, including UNC, UNF, 5HF, NPT, and Metric 6g. Our custom milling, turning, thread rolling, and threading capabilities enable us to manufacture fully threaded studs or studs threaded only at the ends. Bolts can be plated with specific materials according to your application requirement.

 

As an FQA compliant fastener manufacturer, Kelko Products conducts chemical and physical tests on custom-machined stud bolts in an independent testing lab. A comprehensive collection of rings and set plugs is used to continuously check the thread quality of all stud bolts. In addition to gages, we also utilize a 30" optical comparator to inspect key thread parameters of stud bolts.

Specifications

Types of Studs

Double End Studs, Shoulder Studs, and Tap End Studs

Materials

1018 Low Carbon Steel
1045 Medium Carbon Steel
1117 Low Carbon Steel
1137 Low Carbon Steel
1141 Heat Treated Medium Carbon Steel
1141 Medium Carbon Steel
1213 Low Carbon Steel
1215 Low Carbon Steel
12L15 Low Carbon Steel
303 Stainless Steel
304 Stainless Steel
410 Stainless Steel
4140 Heat Treated High Carbon Steel
4140 High Carbon Steel
416 Stainless Steel
655 Silicon Bronze
Alloy 20
Aluminum
ASTM A193 Grade B7 High Carbon Steel

ASTM A193 Grade B7M High Carbon Steel

ASTM A193 Grade B8 316 Stainless Steel

ASTM A193 Grade B8CL2 316 Stainless Steel
ASTM A193 Grade B8M 316 Stainless Steel
ASTM A193 Grade B8MCL2 316 Stainless Steel
ASTM A307 grade A Low Carbon Steel
ASTM A354 Grade BC High Carbon Steel
ASTM A354 Grade BD High Carbon Steel
Brass
Carpenter 20
ETD-150 High Carbon Steel
Fatigueproof Specialty Alloys
Grade 5 Medium Carbon Steel
Monel®
Naval Brass
SAE J429 Grade 5 Medium Carbon Steel
SAE J429 Grade 8 High Carbon Steel
Silicon Bronze
Stressproof Specialty Alloys

Finishes

Black Manganese Phosphate
Black Oxide
Black Zinc
Cadmium
Cadmium & Clear
Cadmium & Yellow
Cadmium QQP
Copper Coated
Hot Dip Galvanized
Passivated

Phosphate Coated
Plain – No Finish
Teflon Coated
Thread Lock Patch
Zinc
Zinc Chromate (Clear, Blue, Yellow, Green)
Zinc Iron & Yellow
Zinc Phosphate
Zylan Coated

Stud Bolt Diameter (Round or Hex)

1/4"
5/16"
3/8"
25/64"
7/16"
15/32"
1/2"
9/16"
5/8"
3/4"

7/8"
1"
1-1/8"
1-1/4"
1-3/8"
1-1/2"
1-5/8"
1-3/4"
2"

Stud Bolt Diameter (Metric Dimensions)

M10
M12
M16

M20
M6
M8

Thread Fits

2A
3A
50NF
5A
5CFS
5HF

Left Hand
Metric 6g
NPT
UNC
UNF

Length

Threading Capacity Up To 20 ft.

Production Capacity

We specialize in short runs and minimal lead times for single piece or 10,000 parts

Capabilities & Equipment List

Services

Chamfering
Cutting
Drilling
Milling (Wrench Flats & Other Flats)
Patching
Roll Burnishing
Sawing

Slotting (Vent & Screw Driver)
Thread Rolling
Threading
Turning (Hex Body & Round Ends)
Turning (Multiple Diameters on one Part)

Screw Machines

(16) A-25 Traubs 1/4" dia. thru 1"
(3) Brown & Sharpe 2G 1/2" dia. thru 1-1/4" dia

Saws

(1) WAGNER WA70 Cold Saw
5/16" dia. thru 2-1/2" dia.
6" up to 40" long

Turning Centers

(1) HARDINGE Conquest 51 2-5/8" dia x 22"
(2) HARDINGE Conquest T42 1-1/2" dia. x 13"
(1) HARDINGE Conquest GT 1" dia. x 11"

Milling Machines

(2) Vertical Milling Machines
Drilling, Slotting, & Wrench Flats

Threading Machines

(1) LANDIS Double Spindle Threading Machine 2" dia.
(2) LANDIS Double Spindle Threading Machines 1-1/2" dia.
(17) Custom-built Threading Machines 1/4" thru 1" dia.
(1) Custom Thread Rolling Machine 1/4" dia. thru 5/8" dia.
(3) Tesker Roll Threaders

Stamping Machines

Custom-built Stamping Machines
Customer Identification Marking
Material-grade Marking

Gaging

Extensive Collection of Ring Gages & Set Plugs
STARRETT Tri-Roll Gages & Full-form Gages
(1) 30" Optical Comparator

Additional Information

Industries Served

Electrical
Chemical
Industrial Machinery
Oil Refinery
Engineering

Power
Implement
Pump
Valve
Fluid Power

Certifications

Actual Chemical and Physical Properties Reported by an Independent Testing Laboratory
Certification of Compliance to Drawings, Specifications, or Material
Certifications to a Specified Standard (ASME, ASTM, SAE J429, etc.)
FQA Complaint
Original Mill Certifications

2110 George Street,

Sandusky, OH 44870

Contact Us

Phone: (419) 626-2571

Fax: (419) 626-3115

Email: info@kelkoproducts.com

sales@kelkoproducts.com

Working Hours

Mon - Fri: 7am - 3:30pm

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