bolt

Crossarm or machine bolts are used in the pole line industry. They have square heads and a semi-cone point and typically come with a square nut assembled. They are also typically hot-dip galvanized in order to protect the steel. We can manufacture crossarm bolts up to 1-1/2″ in diameter. Crossarm bolts follow the thread length guidelines used for pole line fasteners.

Carriage bolts (round head with a square neck) are commonly used in wood connections. The square neck under the round head will seat into the hole in the wood to prevent the head from turning. Because they are used with wood, carriage bolts are rarely high strength and virtually always supplied in a standard ASTM A307 specification. Manufacturing Saffron Fasteners manufactures carriage bolts from 1/4″ diameter through 1-1/4″ diameter in most ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions, carriage bolts larger than 1″ in diameter, or bolt heads with your company’s name and/or logo.

Headed anchor bolts are different from bent anchor bolts or anchor rods, because the non-threaded end has a forged hex, heavy hex or square head. The headed end is embedded into concrete foundations to secure structural steel columns, light poles, bridge rail, and substation structures. Available specifications include, but are not limited to, ASTM F1554, A449, and A307. Note: A threaded rod with a welded nut IS NOT a headed anchor bolt and should not be substituted for an anchor bolt requiring a forged head without approval from the Engineer of Record. Manufacturing Saffron Fasteners manufactures headed anchors from 1/2″ through 4″ diameter in many different ASTM specifications. They are provided either plain finish or hot-dip galvanized.

Timber bolts are also referred to as dome head, fender head, safety head, and mushroom head bolts. In the Pacific Northwest, they are referred to as economy bolts. They are used in marine and wood applications. The underside of the large, rounded, low-profile head of a timber bolt has two nubs or fins which prevent the bolt from turning in the timber. The oversized timber bolt head eliminates the need for a malleable iron washer, and therefore reduces costs. Manufacturing Saffron Fasteners manufactures timber bolts from 1/2″ diameter through 4″ diameter in most ASTM, AASHTO, and SAE specifications. Special timber bolt tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.

Heavy hex structural bolts are designed for steel-to-steel structural connections. Consequently, they are typically very short. The A325 and A490 specifications are not intended for general applications, including anchor bolts. In these applications, substitutions of A449 for A325 and A354 grade BD for A490 should be considered. Manufacturing Saffron Fasteners manufactures A325 and A490 heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter, typically in lengths longer than those which are normally available in the marketplace.

HEAVY HEX SCREW Several ASTM specifications require a hex head that is larger than a standard (finished) hex head. These specifications include: A193, A320 and A307B. Although A325 and A490 bolts also require a heavy hex head, please refer to Structural Bolts for dimensional specifications, since these bolts have shorter thread lengths than standard heavy hex bolts. Applications Heavy hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Heavy hex bolts with forged heads are also commonly used as headed anchor bolts. Manufacturing Saffron Fasteners manufactures heavy hex bolts from 1/2″ diameter through 2-1/2″ diameter in most ISO, IS, ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.

Several ASTM specifications require a hex head that is larger than a standard (finished) hex head. These specifications include: A193, A320 and A307B. Although A325 and A490 bolts also require a heavy hex head, please refer to Structural Bolts for dimensional specifications, since these bolts have shorter thread lengths than standard heavy hex bolts. Applications Heavy hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Heavy hex bolts with forged heads are also commonly used as headed anchor bolts. Manufacturing Saffron Fasteners manufactures heavy hex bolts from 1/2″ diameter through 2-1/2″ diameter in most ISO, IS, ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.

Square head machine bolts were the industry standard prior to hex bolts gaining prominence. Square bolts are now most commonly used for aesthetic purposes to provide a rustic look in a new structure or to match existing fasteners in an older structure. Square lag screws are also used for these purposes. Crossarm or machine bolts are commonly supplied for the utility industry and included an added cone point. Manufacturing Saffron Fasteners manufactures square bolts from 1/2″ diameter through 4″ diameter in most ISO, IS , ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. Portland Bolt stocks square head blanks that are used for small orders or expedited deliveries.

Hex bolts (six sided heads) are the industry standard for fasteners with forged heads. ISO grade 4.6 , ASTM A307 grade A bolts, all SAE hex bolts, and several other common specifications require a standard (finished) hex head. For specifications such as A307 grade B, that require a heavy hex pattern, refer to dimensional tolerances for heavy hex bolts or structural bolts. Applications Hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Hex bolts with forged heads are also commonly used as headed anchor bolts. Manufacturing Saffron Fasteners manufactures hex bolts from 1/4″ diameter through 4″ diameter in most ISO, IS, ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.

Hex bolts (six sided heads) are the industry standard for fasteners with forged heads. ISO Grade 4.6 , 5.8, 8.8, 10.9, 12.9. ASTM A307 grade A bolts, all SAE hex bolts, and several other common specifications require a standard (finished) hex head. For specifications such as A307 grade B, A325 and A490 that require a heavy hex pattern, refer to dimensional tolerances for heavy hex bolts or structural bolts. Applications Hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Hex bolts with forged heads are also commonly used as headed anchor bolts. Manufacturing Saffron Fasteners manufactures hex bolts from 1/4″ diameter through 4″ diameter in most ISO. IS. ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.