MATERIAL DECLARATION SHEET Material # 6638S Product Line Precisions Posted Date Compliance Date Since Inception RoHS Compliant Yes No. Construction element Material group Material weight [g] 1 Hex Nut Stainless Steel Alloy 2 Lock Washer Stainless Steel Alloy 0.25 3 Bearing Ball Stainless Steel Alloy 0.3 4 Collector Ring Copper-Nickel Alloy Plating Materials Carbon Manganese Silicon Chromium Nickel Iron Carbon Manganese Silicon Chromium Nickel Iron Carbon Manganese Phosphorus Sulfur Silica Chromium Iron Copper Zinc Lead Nickel Iron Manganese Gold If applicable Average mass [%] 7440-44-0 7439-96-5 7740-21-3 7740-47-3 7740-02-0 7439-89-6 7440-44-0 7439-96-5 7740-21-3 7740-47-3 7740-02-0 7439-89-6 7440-44-0 7439-96-3 7723-14-0 7704-34-9 7440-21-3 7440-47-3 7439-89-6 7440-50-8 7440-66-6 7439-92-1 7440-02-0 7439-89-6 7439-96-3 7440-57-5 0.15% 1.00% 1.00% 11.5-13.5% 1.25-2.5% Balance 0.15% 1.00% 1.00% 11.5-13.5% 1.25-2.5% Balance 0.69% 0.66% 0.007% 0.005% 0.24% 0.24% Remainder 63.5-66.5% 17.25% 0.05% 11.0-13.0% 0.25% 0.50% 100% CAS Sum [%] 5 Teflon Shim PTFE 6 Ink Ink 0.0004 7 Modified Ink Ink 0.0004 8 Termination Ink Ink 0.0005 9 Conductive Epoxy BCC 0.0004 10 Cover Dially Phthalate Plating 0.012 0.125 11 Terminal Leaded Brass Alloy 12 Bushing/Lid Aluminum Alloy 13 C-Ring Stainless Steel Alloy Headquarters Riverside CA 0.01 Polytetrafluoroethylene 1-Dichloro-1-Fluoroethane Phenol Formaldehyde Xylene Amorphous Silica Carbon Silver Phenol Formaldehyde Xylene Amorphous Silica Carbon Silver 9002-84-0 1717-00-6 108-95-2 50-00-0 1330-20-7 7631-86-9 7440-44-0 7440-22-4 108-95-2 50-00-0 1330-20-7 7631-86-9 7440-44-0 7440-22-4 15% 85% <1% <2% 30% <3% 20% <42% <1% <2% 30% <3% 20% <42% Formaldehyde Polymer with Phenol & Methyl phenol 9039-25-2 <20% 2-Ethyl Acetate Silver Biphenyl A Polyglycidyl Ether Butyl Glydicyl Ether Silver Antimony Trioxide Aluminum Hydroxide Diallyl Phthalate Glass Fiber Gold Copper Lead Tin Zinc Aluminum Iron Lead Magnesium Sulfur Zinc Iron Chromium 124-17-4 7440-22-4 25068-38-6 2426-08-6 7440-22-4 1309-64-4 21645-51-2 ********** 65997-17-3 7440-57-5 7440-50-8 7439-92-1 7440-31-5 7440-66-6 7429-90-5 7439-89-6 7439-92-1 7439-98-5 7704-34-9 7440-66-6 1309-37-1 7440-47-3 <30% <50% 27% 9% 64% <5% <20% Remainder <50% 100% 55-72% 0-3.5% 0-1% 35-45% 93% 5.50% 0.70% 0.40% 0.40% 0.30% 85% 13% www.bourns.com page 2 of 3 14 Collector Arm Copper-Nickel Alloy 15 Contact Spring Metal Alloy 16 Rotor Polyphenylene Sulfide 17 Shaft Stainless Steel Alloy 6.85 18 Washer Stainless Steel Alloy 0.01 19 Washer Stainless Steel Alloy 0.01 Silicon Manganese Copper Zinc Lead Nickel Iron Manganese Copper Nickel Palladium Platinum Silver Polyphenylene Sulfide Nickel Chromium Iron Manganese Silicon Iron Chromium Manganese Nickel Silicon Iron Chromium Manganese Nickel Silicon 7440-21-3 7439-96-3 7440-50-8 7440-66-6 7439-92-1 7440-02-0 7439-89-6 7439-96-3 7440-50-8 7440-02-0 5/3/7440 6/4/7440 7440-22-4 26125-40-6 7440-02-0 7440-47-3 1309-37-1 7439-96-5 7440-21-3 7439-89-6 7440-47-3 7439-96-3 7440-02-0 7440-21-3 7439-89-6 7440-47-3 7439-96-3 7440-02-0 7440-21-3 1% 1% 63.5-66.5% 17.25% 0.05% 11.0-13.0% 0.25% 0.50% 0-20% 0-20% 40-60% 0-20% 20-40% 100% 8.90 18.30 Balance 1.80 1.00 70% 18% 2% 9% 1% 70% 18% 2% 9% 1% Total weight Headquarters Riverside CA www.bourns.com page 3 of 3