This part is a kind of semiconductor called NASM25027.

Function of this product has Thin Height Heavy Duty Hex.

Manufacturers : SPS

Image and pinout :

Some of the text within the PDF file :

Standards & Specifications NASM25027 except as noted FLEXLOC® Thin Height Heavy Duty Hex H H S S W C Markings: "S" or "SPS" on .190 and larger. "C" designates cres material. Countersink, counterbore or radius to threads Style A Style B Either style to be supplied at manufacturer's option. Dash Type* No Threads See Note 5 C Ref H Max S Min W Max W Min Axial Strength Lbs Min Steel & Cres Aluminum Brass FKC FK FK FK FK FKC FK FK FK FK FK FK FK FK 420 518 616 714 813 912 1011 1210 1409 1608 1807 2007 2206 2406 .250-20 UNC-2B .312-18 UNC-2B .375-16 UNC-2B .437-14 UNC-2B .500-13 UNC-2B .562-12 UNC-2B .625-11 UNC-2B .750-10 UNC-2B .875-9 UNC-2B 1.000-8 UNC-2B 1.125-7 UNC-2B 1.250-7 UNC-2B 1.375-6 UNC-2B 1.500-6 UNC-2B .552 .622 .696 .837 .907 1.051 1.119 1 [ ... ]

NASM25027 PDF Datasheet Download