Custom 32tpi Socket Head Cap Screws - 4140 Material With 37-44 Hardness And 1/4-32 Thread Pitch

These are custom 32tpi socket head cap screws we supplied to our automotive prototyping customer.  4140 plain alloy material was used to produce a small batch of just 25 pieces domestically in the USA.  The 1/4-32 thread pitch was really the only tricky part requiring a custom production run.  Speed was absolutely critical to our customer and we were able to get the parts made and shipped within 2 weeks from order confirmation.

Extended Thread Large B7 Hex Bolts - 7/8 X 9 ASTM A193 B7 Hex Bolts With Reworded Extended Threads

Our customer needed 24 pieces of these extended thread large B7 hex bolts, measuring 7/8 X 9 with coarse thread.  The cut thread was extended as far as possible for each of the 24 pieces and the turnaround for the small quantity was relatively fast at just a few business days.  The finalized hex bolts were supplied with nuts and washers.

Custom 316 Stainless Tapered Head Screws - 10-13 X 1.75" Thread Forming Screws With Gimlet Point & Custom Rounded Tapered Hex Head

These custom 316 stainless tapered head screws turned out to be a very tricky part - while the 10-13 thread and gimlet point were easy to incorporate, the custom head was a tough problem to solve.  A 10 degree taper was required on the hex flats and the corners rounded.  A rounded profile on a vertical cross-section of the head was also required to allow the screw to rotate while still maintaining hex head engagement.  It took three rounds of tooling to finally get the head shape just right and fit the application requirements our customer desired.  Domestic production of this part was set at 50,000 pcs with a lead time of 8-12 weeks.

Custom Small Diameter U-Bolts - 4-40 X .75" Fully Threaded Round U-Bolts In Low Carbon Steel Material

These custom small diameter u-bolts are the more unusual u bolts we have supplied over the years - the one and only time we had to get fully threaded u-bolts manufactured.  Typically only a partial length of each leg is threaded, whether cut threads or rolled, but in this case our customer specifically requested a fully threaded version.  2,000 pieces were run through a domestic production process with a lead time of 5-6 weeks.  4-40 thread was incorporated with the inside width at .57 inches and inside length at .75 inches.

Custom 4140 Flat Socket Head Screws - Custom 1/4-28 X .595" Flat Socket Screws For Aerospace Applications

These custom 4140 flat socket head cap screws were produced domestically for our aerospace customer using AISI 4140 alloy steel material per AMS 6349.  Heat treat to 160-180 ksi per AMS 2759 was performed to finalize the production process.  Magnetic particle inspection per ASTM 1444 (Type I, Meth A, Sens Lev 3) was performed after the machining process was completed.  Lead time for this part varies significantly based on how busy the manufacturing and testing facilities are at the time of start.

Custom Low Head Socket Cap Screws - 1/4-20 X 1 Low Head Socket Head Cap Screws In Black Zinc With Nylon Thread Locking Patch

These are custom low head socket cap screws we supply to an offroad automotive product manufacturer.  We have a revolving blanket purchase order arrangement with next day deliveries of the parts from the individual releases.  Measuring 1/4-20 X 1 to standard IFI specifications, these low head socket cap screws are made in plain grade 5 steel material with black electroplated zinc finish for corrosion resistance.  A standard nylon thread locking patch is applied as the final part of the process to get the parts ready for use.

Large Double End Studs - 1"-8 Partially Threaded Studs In Plain B7 Material

We supplied our customer with 3 different sizes of these large double end studs: 160 pieces of 1"-8 X 5.125" with 1-1/2" and 1-3/4" of thread lengths, 30 pieces of 3/4"-10 X 3.8125" with 1" and 1-1/4" of thread lengths, and 12 pieces of 1-1/8"-8 X 5-3/4" with 1-7/8" and 1-1/4" thread lengths.  All threaded studs were made domestically using B7 material with light oil plain finish.  One side of each double end stud was stamped with the B7 material designation.  Lead time to produce all three sizes was approximately 5 business days from order confirmation.

Custom Metric Flange Bolts - Made Using 316 Stainless Steel Material

We supplied our industrial design customer these custom metric flange bolts in two different sizes, M12-1.75 X 35MM and M12 -1.75 X 45MM.  Small batch of 100 pieces in each length was manufactured using our overseas production facility as a test run to allow our customer to test the parts in their mold application prior to a full production run.  Due to the small quantities involved, the parts were machined rather than cold or hot headed.  The machining process is much faster because it avoids lengthy and costly tooling and machinery set up, which would not be cost effective for a small run.

Custom Stainless Steel Precision Pins - 303 Stainless Per AMS 5640 V Type 1

220 pieces of these custom stainless steel precision pins were produced domestically for our aerospace customer using 303 stainless steel material.  Original specifications on the drawing called out for 303 stainless steel per AMS 5638 but we obtained a deviation approval to provide the part using a similar AMS 5640 V Type 1A spec material instead.  Passivation per AMS 2700, method 1, type 4, class 2 was done to complete the parts prior to QC inspection.  Overall length measures at 1.131" +/-.005 and the shaft diameter is set to .074-.075".  The width of the flattened section on one end reaches a diameter of .084" +/- .005.  The other end is rounded at R .078.

Custom 302 Stainless Compression Springs - .030 wire size

We had a small quantity of 250 pieces of these custom 302 stainless compression springs produced domestically, with a lead time of approximately 8 weeks.  .030 wire size was used and the free length was set at 1.5".  Out of the 18 total coils 16 were active and the outside diameter tapered down to .22" from the max outside diameter of .34".