Toll Free:  800-346-7883  |  Phone: 419-626-2571  |  Email: info@KelKoproducts.com
PRODUCTSStud BoltsCustom Turned
Products
Additional Machining
and Finishing Services
Compliant with the Fastener Quality Act of 1999

Special and Standard Stud Bolts for OEMs and Distributors

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Stud Bolts

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.


Custom Double End Studs #1   Custom Double End Studs #2   Custom Double End Studs #3   Custom Double End Studs #4
 
Traub Automatics #1    Traub Automatics #2   2G Brown & Sharps Screw Machine   CNC Turning Center
 
Kelko Threader   Lead Screw Landis Threaders   Tesker Roll Threaders   Threading Machines
 
Optic Comparator   Thread Measurement Gage   Go-No-Go Gages   Custom Gage
 
Gage Inventory   Gage Plugs   Thread Testing   Stock Materials
 
Production Facility   Quality Control   Shipping #1   Shipping #2

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Specifications · Capabilities · Equipment List · Additional Information


Specifications

Types of Studs Double End Studs
Shoulder Studs
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
Length Threading Capacity Up To 20 ft
Thread Fits
2A
3A
50NF
5A
5CFS
5HF
Left Hand
Metric 6g
NPT
UNC
UNF
Production Capacity We specialize in short runs and minimal lead times for single piece or 10,000 parts

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Capabilities

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)

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Equipment List

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

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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

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KelKo Products | Manufacturers of Custom Fasteners, Studs and Bolts