Hinges provide a smooth pivot mechanism for doors, panels, cabinets, and many other applications. Military-standard hinges, such as MS20001 and MS20257 series are widely used for their durability and precision engineering offering exceptional strength and performance. Sourced from quality manufacturers, MS20001 and MS20257 series hinges (separately presented) are offered as OEM parts or under our own labelled (AVIATIONEU NEW ERA) product lines as Butt or Continuous  (aka Piano) hinges. Butt hinges, the most common type, feature two leaves joined by a pin for simple and robust pivot action. Continuous or piano hinges run the full length of of connecting surfaces providing uniform support and stability.

MS20001 extruded aluminum hinges are made of either 2024-T4 or of 7075-T6511, two very strong metals and used primarily in structural applications. Those of MS20257 series with bent hinge loops are made of a softer, weaker grade of aluminum, are less expensive but they should not be used as substitutes for the MS20001 hinges in structural applications.

H. A. GUDEN Co. MS20001 hinges are manufactured  in accordance with MS20001P Military Specification (Mil-Spec) Standard typically in continuous lengths. Materials include aluminum alloys 2024-T3511 per SAE-AMS-QQ-A-200/3, ASTM-B221, ASTM B241/B241M or 7075-T73511 per SAE-AMS-QQ-A-200/11, ASTM B241/B241M, ASTM-B221. Finish options include plain, anodize in accordance with MIL-A-8625, Type II or chemically surface treat in accordance with MIL-DTL-5541. Parts can be supplied as full lengths and in any of the standard MS20001 half hinge designations of X, Y of H style hinges (*). Additional custom/special features such as countersunk holes, cut outs, PEMs, slots, bends, offsets are also offered. The full MS20001 series part number is stamped at regular intervals along the length of each hinge.

Those offered as part of AVIATIONEU NEW ERA product lines are are mostly offered as piano hinges, made from aluminum alloys and adhere to the respective MS20001 or MS20257 Mil Standards for their materials and construction. The MS20001 series piano hinges are lightweight (about half the weight of steel) and exhibit mild corrosion resistance. They have a standard clearance with the distance between the leaves being approximately the same as the pin diameter when they are closed. Offered in standard lengths of 72.0" and furnished with cadmium-plated 302 stainless steel hinge pins. They do not come with mounting holes which have to be drilled, unless otherwise specified.

OEM & AVIATIONEU NEW ERA hinges are sold in pieces as assembly with CRES hinge pins. The number  after the dash in the product reference number (SKU) denotes the hinge length in inches (in.). For example, the number "7200" in the part number  denote a MS20001 series hinge 72 inches (6 feet) long.

Manufacturer C of C and material certifications available upon request.

(*) Type X half hinges mate with type Y while Type H half hinges mate with type H.

Hinges provide a smooth pivot mechanism for doors, panels, cabinets, and many other applications. Military-standard hinges, such as MS20001 and MS20257 are widely used for their durability, exceptional strength and performance & precision engineering. MS20001 (separately presented) and MS20257 Military-standard hinges are offered as OEM parts of H. A. GUDEN Co. or under our own labelled (AVIATIONEU NEW ERA) product lines. They are supplied as Butt or Continuous  (aka Piano) hinge types. Butt hinges, the most common type, feature two leaves joined by a pin for simple and robust pivot action. Continuous or piano hinges run the full length of connecting surfaces providing uniform support and stability.

MS20001 extruded aluminum hinges are made of either 2024-T4 or 7075-T6511 Aluminum Alloys, two very strong metals and used primarily in structural applications. Those of MS20257 Standard are made of a softer, weaker grade of aluminum. They are less expensive but they should not be used as substitutes for the MS20001 hinges. All supplied hinges come without mounting holes.

H. A. GUDEN Co. manufactures MS20257 hinges to the respective Military Specification and offered in P or C Series. MS20257(P) hinges are made of non anodized 5052-H24 or H34 aluminum with hinges anodized per Mil-A-8625 Type II also available. Their MS20257(C) counterparts are manufactured from 302 or 304 Stainless Steel. Stock is maintained in hinges of 72" length and different sizes (MS20257-1, MS20257-2, MS20257-3, MS20257-4, MS20257-5 and MS20254-6) corresponding to different open inch widths. They can be supplied as full lengths and in any of the standard MS20257 half hinge X, Y of H style designations. Full lengths are supplied assembled with a pin, while half hinges (unless otherwise specified) as  leaf only with corresponding mil spec pins sold separately. Additional custom operations such as countersunk holes, cut outs, PEMs, slots, bends, offsets and many other special features can also be supplied.

Sourced from quality manufacturers, MS20257P & MS20257C piano hinges are also offered as part of our own labelled (AVIATIONEU NEW ERA) product lines in different material thicknesses, open widths and standard stock lengths of 36" & 72" (3 & 6 feet).

MS20257P hinges consist of two half aluminum hinges made from Aluminum Alloy with anodized finish which mate and are held together by a hinge pin (included).They supersede AN257 series piano hinges & are similar to MS20257C stainless steel piano hinges. Both are sold in pieces. The number  after the dash in the product reference number (SKU) denotes the length of the hinge (e.g. MS20257C5-3 denotes a MS20257(C) stainless steel hinge 3 feet long while the MS20257P5-7200 a MS20257(P) aluminum hinge 72 in. (6 feet ) long. 

Manufacturer C of C and material certifications are available upon request for all our supplied hinges. Their requirement must be specified at order placement as additional charges may apply.