Ball Studs, Grounding Ball Studs

Features: Permanent grounding ball studs permit universal and ball stud clamps to be used for different electrical systems such as apparatus, bus bar, conductors, vehicles, reels etc. Spherical form of grounding ball stud permits installation of grounding clamp at various angles to reach the most inaccessible areas. Meets ASTM and IEC standards

Material: 99.9% electrolytic tin-plated copper. Stainless steel hardware (washer, lock washer, and nut) included (if applicable).

03-M-006 Dim Drawing Image

Catalog Number See Notes A B C D E Weight Lbs (kg)
HC30036-1 25mm 1/2-13 1 6-1/4 1 1.2
HC-30037-1 25mm 5/8-11 1 3 1 0.5
HC-30037 25mm 5/8-11 1 3 No Screw 0.4
HC-30036-0.5 * 25mm 1/2-13 1 6-1/4 1/2 1.2
HC-30036 25mm 1/2-13 1 6-1/4 No Screw 1.1
HC-30037-0.5 * 25mm 5/8-11 1 3 1/2 0.5
HC-30029-1 25mm 1/2-13 1 3 1 0.6
HC-30029 25mm 1/2-13 1 3 No Screw 0.5
HC-30028-1 20mm 5/8-11 1 2-5/8 1 0.8
HC-30028 20mm 5/8-11 1 2-5/8 No Screw 0.7
HC-30029-0.5 * 25mm 1/2-13 1 3 1/2 0.6
HC-30015 20mm 1/2-13 7/8 6 No Screw 0.8
HC-30028-0.5 * 20mm 5/8-11 1 2-5/8 1/2 0.8
HC-30015-0.5 * 20mm 1/2-13 7/8 6 1/2 0.9
HC-30015-1 20mm 1/2-13 7/8 6 1 0.9
HC-30012 30mm 5/8-11 1-1/2 4-3/8 No Screw 1.8
03-M-027 20mm 5/8-11 1 4 No Screw 0.8
HC-30012-0.5 * 30mm 5/8-11 1-1/2 4-3/8 1/2 1.9
HC-30012-1 30mm 5/8-11 1-1/2 4-3/8 1 1.9
03-M-027-0.5 * 20mm 5/8-11 1 4 1/2 0.9
03-M-027-1 20mm 5/8-11 1 4 1 0.9
03-M-026-1 20mm 1/2-13 7/8 4 1 0.7
03-M-026 20mm 1/2-13 7/8 4 No Screw 0.6
03-M-006-1 20mm 1/2-13 7/8 2-5/16 1 0.4
03-M-006 20mm 1/2-13 7/8 2-5/16 No Screw 0.2
03-M-026-0.5 * 20mm 1/2-13 7/8 4 1/2 0.7
03-M-006-0.5 * 20mm 1/2-13 7/8 2-5/16 1/2 0.3

1)  * = washer, lockwasher, and hardware not included
2) HC-30033 used as Grounding Stud on 01-M-037 and Parking Stud on 01-M-036
3) Other length for "E" available upon request (Example: HC-30029-3.5, for 3.5 inch length), consult MPS
4) 20 mm and 25 mm grounding ball studs are rated for 35kA per IEC 61230 and 43kA per ASTM R855
5) 30 mm grounding ball studs are rated for 60kA per IEC 61230 and 74kA per SATM R855

Group 0 Dim Drawing Image

Catalog Number A B C Conductor Material Thread Length 'T' (Inches) Capacity 15 Cycles Weight Lbs (kg)
03-M-015 7-1/8 4-1/8 3/4 Tin-plated copper 5/8-11 55kA (IEC) 68kA (ASTM) 1.2
03-M-016 6-1/2 3-1/4 1-1/2 Aluminum Block; tin-plated ferrule and stud none 12kA (IEC) 15kA (ASTM) 0.5
03-M-010 3-5/8 2-23/64 7/16 Tin-plated copper 3/8-16 12kA (IEC) 15kA (ASTM) 0.1

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