Cadmium Plated Stud Bolts Price - ASTM F436 F436M Hardened Steel Washers – Dingshen Metalworks

ASTM F436 F436M Hardened Steel Washers Hardened Circular, Clipped Circular, and Extra-Thick Washers, Beveled Washers Metric Size: M12-M100  Inch Size: 1/4”-4” Material Grade: Through hardened washers shall have a hardness of 38 to 45 HRC, except when zinc-coated by the hot-dip process, in which case they shall have a hardness of 26 to 45 HRC. Metric washers are suitable for use with fasteners covered in Specifications A 325M, A 490M, A 563M and with fasteners of Specification F 568 property classes 8.8 and higher. Inch washers are suitable for use with fasteners covered in Specifications A325, A 354, A 449, and A 490. Finish: Black Oxide, Zinc Plated, Hot Dip Galvanized, Dacromet, and so on Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advantage: High Quality and Strict Quality Control, Competitive price, Timely delivery; Technical support, Supply Test Reports Please feel free to contact us for more details.

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    this is my Russian Made Saiga-12 12Gauge ,
    Mods include 2 gas ports enlarged to .0925. Gas Puck turned down to fit into gas piston tube at one end. Lower bolt face relieved and polished to allow loading of magazine on a closed bolt. trigger slop and over travel eliminated by set screws and a tapco interfuse M4 style stock.
    All Mods and gunsmithing done by me
    The magazines used are: 1) an Aliance Armament 20 round drum 2) Promag 10 round magazine (not recommended) 3) factory 5 round.
    Ammunition used was:
    1)cheap winchester #7 1/2 shot lowbrass 2)cheap remington #7 1/2 low brass 3)cowboy black powder #6

    the one hang up the drum has was on the first time it was ever fired and it was the only hang up in 200 rds

    the promag 10 rd mag however has been less then reliable