MT Valves & Fittings product. Set of 4 bolts and washers as additional parts, made of AISI-304 stainless steel. This set of bolts with serrated washer for better grip is suitable as a spare part for Series 89 flanged brass compression fittings used in PE pipe systems. MT brass compression fittings comply with the pressure conditions in accordance with DIN 8076-1 and have been designed in accordance with UNE EN 1254-3, making them ideal for both hot and cold water applications. Available references and published specifications: • 8990001 — measures: SPARE PART - SET OF 4 BOLTS AND 4 WASHERS 75; weight (kg): 0.12; small / large box: 1 / 150 • 8990002 — measures: SPARE PART - SET OF 4 BOLTS AND 4 WASHERS 90-110; weight (kg): 0.14; small / large box: 1 / 130 Price and local availability on request. Source: https://mtspain.net/en/spare-part-set-of-four-bolts-and-washers/