Custom and Standard Fasteners for Utility Purposes
Master Bolt is the best manufacturer and supplier option for those in the utility industry. We have a large inventory of commonly used fasteners for utility work, and we can quickly fill any order with a guarantee that our products work the first time, every time.
When Disaster Strikes, Master Bolt is There To Help
We at Master Bolt are able to supply large quantities of a wide variety of fasteners with quick turn around times. We are always doing copious amounts of testing on our products to ensure that they are ready for the field.
Over the last few years, since the tropical storms in Puerto Rico, we have supplied the rebuilding effort with the fasteners they needed to repair their powerline and telephone poles.
Not only are we able to provide quick and reliable service, but we have the ability to work with our customers on cost. We have the R&D capacity to find out the perfect balance between material cost and material quality that still provided you with the robust fastener you need, but with low-cost materials.
Leading Fasteners for Pole Line and Power Utility Industries
Pole line and Power Utility fasteners are an integral part of wooden crossarm assemblies for utility poles. Fasteners are used to mount wooden crossarms to utility poles as well as line construction specialty products. These utility poles are found right outside of your business and home.
There are multiple head styles used for pole line and power utility applications. These head styles include hex head machine bolts, square head machine bolts, washer/flange head bolts, carriage bolts, and A325 & A490 structural bolts.
Custom Bolts
Custom Bolts with nearly any head configuration can be manufactured at Master Bolt. We have many years of experience with designing and manufacturing tooling in order to supply the customer with the fasteners they require. At Master Bolt, we offer heat treating, plating, nyloking, mechanical testing, and much more. Give us a call and speak with one of our knowledgeable staff members to discuss your next fastener bid.
Square Head Machine Bolt
Square Head Machine bolts are used for fastening pole line hardware and line construction specialty products to crossarm poles and other structures as well as attaching the wooden crossarms to the pole. Square head machine bolts have an added semi-cone point and a thread length unique to pole line fasteners depending on the length of the bolts. These bolts can be paired with corresponding nuts. Dimensions in accordance with ASME B18.2.1.
|
Diameter |
1/2” – 2” |
|
Thread |
Unique to the diameter of the bolt |
|
Length |
To the length the customer requires |
|
Grade |
Grade 2, Grade 5, Grade-8, Grade-8.8, Grade-10.9, Grade-12.9 |
|
Finish |
Galvanized, Plain |
|
Tensile Requirements |
In accordance with specification |
|
Material |
1018, 1045, 4140, 304SS, 316SS |
Hex Head Bolt
Hex Head Machine bolts are used for fastening pole line hardware and line construction specialty products to crossarm poles and other structures as well as attaching the wooden crossarms to the pole. Hex head machine bolts have an added semi-cone point and a thread length unique to pole line fasteners depending on the length of the bolts. These bolts can be paired with corresponding nuts. Dimensions in accordance with ASME B18.2.1
|
Diameter |
1/2” – 2” |
|
Thread |
Unique to the diameter of the bolt |
|
Length |
To the length the customer requires |
|
Grade |
Grade 2, Grade 5, Grade-8, Grade-8.8, Grade-10.9, Grade-12.9 |
|
Finish |
Galvanized, Plain |
|
Tensile Requirements |
In accordance with specification |
|
Material |
1018, 1045, 4140, 304SS, 316SS |
Washer Head Bolt
Washer Head bolts are used when the head of the bolt sits flush to a wooden member. The forged washer side provides a larger bearing surface so that when the bolt is tightened, the wood underneath the head is not damaged. Washer head bolts have an added semi-cone point and a thread length unique to pole line fasteners depending on the length of the bolt. These bolts can be paired with corresponding nuts.
|
Diameter |
1/2” – 2” |
|
Thread |
Unique to the diameter of the bolt |
|
Length |
To the length the customer requires |
|
Grade |
Grade 2, Grade 5, Grade-8, Grade-8.8, Grade-10.9, Grade-12.9 |
|
Finish |
Galvanized, Plain |
|
Tensile Requirements |
In accordance with specification |
|
Material |
1018, 1045, 4140, 304SS, 316SS |
Spool Studs
Spool Studs are a unique pole line fastener. Forged with either a single or double integral washer upset at the insulator end (double upset spool stud is pictured). These fasteners are used for side-of-pole installation when supporting neutral conductors and secondary service wires.
These bolts are typically manufactured with 5/8-11UNC-2A rolled threads on both ends. Master Bolt has the capability to manufacture the spool studs at various lengths, diameters, grades of material and any other requirements can be discussed as well.
|
Diameter |
5/8 1D Typical, Master Bolt has the Capability to manufacture other diameters. |
|
Thread |
Varies per customer requirement |
|
Length |
Varies per customer requirement |
|
Grade |
Grade 2, Grade 5, Grade-8 |
|
Finish |
Galvanized |
|
Tensile Requirements |
In accordance with specification |
|
Material |
1018, 1045, 4140 |
Carriage Bolt
Carriage bolts are specialized for use in woodworking, typically fastening metal to wood. Carriage bolts are designed with a domed head, which can prevent loosening from one side, an enlarged head shape also prevents the bolt from being pulled through a wooden construction. These bolts can be paired with corresponding nuts.
|
Diameter |
1/2” – 2” |
|
Thread |
Unique to the diameter of the bolt |
|
Length |
To the length the customer requires |
|
Grade |
Grade 2, Grade 5, Grade-8, Grade-8.8, Grade-10.9, Grade-12.9 |
|
Finish |
Galvanized, Plain |
|
Tensile Requirements |
In accordance with specification |
|
Material |
1018, 1045, 4140, 304SS, 316SS |
Heavy Hex Structural Bolt
Heavy Hex Structural bolts are designed for steel-to-steel structural connections. Consequently, they are typically very short. Structural bolts offer greater strength. These bolts can be paired with corresponding nuts.
|
Diameter |
1/2” – 2” |
|
Thread |
Unique to the diameter of the bolt |
|
Length |
To the length the customer requires |
|
Grade |
ASTM-A325, ASTM-A490 |
|
Finish |
Galvanized, Plain |
|
Tensile Requirements |
In accordance with specification |
|
Material |
4140, 4340 |
TECHnical Information
- Because of the unique application of pole line machine bolts, there are specific thread lengths associated with a given bolt size. The thread lengths are in accordance with ASME B18.2.1 or to the customers drawing or request. Threads shall be machine rolled or cut.
- Pole line fasteners often have an added semi-cone point on the threaded end of the bolt. This is provided to ease installation into a wooden member without the threaded end of the bolt getting snagged on the wood.
- Due to the exposure to outside elements, pole line hardware is required to be Galvanized to prevent corrosion.
1. ASTM F2329 – Covers the requirements for hot-dip zinc coating applied to carbon steel and alloy steel bolts, screws, washers, nuts, and special threaded fasteners applied by the hot-dip coating process.
2. ASTM A153 – Covers hot-dip, zinc coating on iron and steel hardware. In 2005, ASTM F2329 was created, which is a more appropriate specification regarding the galvanizing of threaded fasteners.
3. ASTM A123 – Covers the hot-dip galvanizing of iron and steel products made from rolled pressed and forged shapes, castings, plates, bars, and strips.
4. ASTM A307A – This specification covers carbon steel bolts and studs, which are your run of the mill, mild steel bolt manufactured from A36 round bar. A307A is the grade that most pole line fasteners are made to.
5. ASTM A325 – This specification covers high-strength, heavy hex bolts used in structural steel-to-steel connections. The A325 specification includes diameters ranging from 1/2” through 1-1/2” only. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts.
6. ASTM A490 – A490 Bolts are intended for use in structural connections similar to ASTM A325, but being produced from alloy steel instead of medium carbon steel, possed high tensile strength.
RECOMMENDED PRODUCTS FOR YOUR INDUSTRY
The Top Three Products We Manufacture for Your Industry
Heavy Hex Bolt
Ø3/8” to Ø2”
Various Lengths
Square Head Bolts
1/2" TO 2" Diameters
3" TO 40" Lengths
Fetter Drive Bolts
Square & Hex Head
5/8" and 3/4" Diameters
3" To 40" Lengths
Thread designed to drive into pre-drilled holes without destroying wood fiber. Screws out.
CONTACT MASTER BOLT
Custom Bolt Manufacturer Servicing the Utility Industries
7:00 AM - 5:00 PM
(440) 323-5529
For more information about our services, or if you'd like to review your company's hardware needs,
contact us at 440-323-5529 or toll-free at 888-905-2658.
We look forward to providing you with the best custom made industrial hardware in the U.S.
