Custom Grade 8 Torx Round Head Bolts With Black Zinc

 

These custom grade 8 round head bolts were manufactured for our automotive customer to Grade 8 specification with black zinc finish.  Black zinc finish is always tricky for the grade 8 parts because it requires a bake process to limit risk of hydrogen embrittlement.  The bake process creates slight imperfections in the plating which is more apparent with the black.  The head was cold formed with T50 torx drive and the approximately 3 inches of 7/16-20 was rolled.  A .37" X .20" dog point was incorporated at the end with rounded corners.

Custom Grade 8 Automotive Countersunk Hex Flange Bolts

 

These custom grade 8 countersunk hex flange bolts were manufactured for our automotive after market manufacturing customer with zinc yellow finish.  Partial 1/2-13 thread was rolled and the length under the hex (inclusive of the countersunk portion) was set to 2-3/4".  Full certs were made available with the parts.

Custom Grade 8 Torx Flat Head Dog Point Screws

 

These custom grade 8 flat head screws were manufactured for our automotive aftermarket component manufacturing customer - the dog point was incorporated to allow for better ease of use and the finish was plain thermal black oxide.  5/16-18 thread was rolled with an overall length (including the head height) of .875".  Certs were made available upon request but no PPAP was required for this application.

Custom Grade 5 Left Hand Thread Hex Head Bolts

 

We manufactured these custom left hand thread hex head bolts for our customer to grade 5 requirements in plain thermal black oxide finish.  They measured LH 3/4-10 x 2" in length with the hex head measuring 1.100-1.125" across the flats.  Head height was set to .483-.455".  Full certs were made available with the parts.

Custom A286 Socket Head Captive Shoulder Screws

 

These custom A286 socket head captive shoulder screws were manufactured domestically with full certs and FAIR using DFARS compliant A286 material hardened to minimum ultimate tensile strength of 1100 MPA.  The captive shoulder diameter was set to 1.64mm +0/-.05, 2-56 thread length at 3.78", and overall length under the head at 9.04mm +0/-0.76.  Parts were finished with Passivation per AMS2700, Method 1, Type 2, Class 4.

Custom 416 Stainless Steel Precision Shoulder Pins

 

These custom precision machined shoulder pins were manufactured using 416 stainless steel material for our customer that manufactures scientific measurement instrumentation.  The shoulder diameter was set to .311" +/- .001 and the length under the flange is 1.175" +.002/-.000.  Flange diameter was set to .375" +.001/-.005 and the thickness at .020" +.000/-.002.  Full certs were provided with the parts per our customer's requirement.

Custom Slotted T-Bolts In 316 Stainless Steel

 

These custom slotted T-bolts were manufactured in 316 stainless steel with plain finish based on drawings we created using provided samples.  Unlike the typical slotted drive application we see these t-bolts incorporated the slot for marking/indication purposes to signal the position of the head from the back side.  Each bolt was wrapped in protective netting to avoid damage to the head and thread during transport.  

Custom Tamper-proof Security Lag Screws

 

These custom tamper proof security lag screws were manufactured using 304 stainless steel material with a 0.5" hex socket drive with a press fit security pin.  Overall length of the screw was 2.5" and the unthreaded shoulder diameter was set to .37".  3/8-7 wood screw thread was rolled to complete the parts.  

Custom Slotted Double Thread Studs

 

We supplied these custom slotted double thread studs to our furniture manufacturing customer.  Low carbon steel was used for the production with a black oxide finish.  3/8-16 thread was rolled on each side and the overall length measured at 47.60MM.  The part is similar to the hex socket drive version in alloy steel that we supply our automotive aftermarket OEM customers.

Custom Stainless M16 Precision Machined Hex Nuts

 

These custom stainless steel M16-1.5 H6 thread fit hex nuts were manufactured using 303 stainless steel material with NADCAP certified passivation.  Width across the flats was set to .75" and the thickness/height at .250".  Material certs and certificate of conformance was provided with the parts to our electronics OEM customer.