Grade 9 Bolts Fastenal

9 at the top of the scale this grade offers the most strength in a joint.

Grade 9 bolts fastenal. Under over tightening of fasteners can result in costly equipment failure or personal injury. And shorter in lengths. Property class often just class specifies metric fasteners. Grade 2 requirements for sizes 1 4 through 3 4 in apply only to bolts and screws 6 in.

Bolts with rounded heads such as carriage. Special markings on screw heads and nuts identify the fastener s grade. Extreme caution should be used when using a formula for torque tension relationships. However as highlighted below there are a few issues that must be considered when using higher strength bolting products.

They fit with corresponding tapped holes and nuts to create bolted joints. Bolts secure material by applying pressure from the head of the bolt. Replace a graded fastener with same or higher grade don t replace a grade 8 fastener with a grade 5 or 2. Use them for heavy duty stamping applications as well as earth moving machinery such as bulldozers and excavators.

In threads per inch 307a astm a307 grade a sae j429 grade 5 sae j429 grade 8 f n l g 9 fnl grade 9 clamp load lbs tightening torque clamp load lbs tightening torque clamp load lbs tightening torque clamp load lbs tightening. Easy online ordering for the ones who get it done along with 24 7 customer service free technical support more. The ductility of a bolt decreases as the hardness and strength increases. For bolts and screws longer than 6 in.

Grainger s got your back. Our strongest screws these grade 9 steel screws have a tensile strength of 180 000 psi about 20 stronger than our high strength steel screws. Searching for grade 9 cap screws hex bolts. Inch fasteners those commonly used in north america will have a grade or astm rating.

Grade 1 requirements shall apply. Rev 3 6 09 torque tension relationship for a307a grade 5 8 9 bolts in sq. Grade 8 is near the high end of the grade scale although there are higher grades and strengths for more specialized fasteners. Cap screws and hex bolts have heads designed for tightening to exact specifications with ratchets or spanner torque wrenches.

The zinc yellow chromate plating resists corrosion in wet environments. Grade 9 steel hex head screws are marked with nine radial lines.