Cage Nut Bracket 5/16"
Cage Nut Bracket 5/16"
Captive nut retainer with square nut
Captive nut retainer with 5/16"-18 UNC thread for body and floor mounting. Consists of a metal bracket that holds the square nut in place, even when the bolt is removed. Essential component for body repair and restoration.
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Thread size 5/16"-18 UNC |
Material Steel |
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Finish Mangaan Parkerized |
Composition Bracket + square nut |
Features
- 5/16"-18 UNC thread (Unified Coarse)
- Consisting of retainer bracket and square nut
- Original part number A-3549 (retainer) / A-3550 (nut)
- Fully Mangaan Parkerized for rust protection
- Keeps nut in position when bolt is removed
★ Mangaan Parkerized finish protects both inside and outside against rust, even after welding. Correct historical finish for WWII vehicles — zinc plating is not authentic.
Installation notes
The bracket is welded or clamped to the body in locations where access from the rear is limited. The square nut clicks into the bracket and stays in position, even when the bolt is loosened. Commonly used for floor, body and panel mountings where blind assembly is required.
Compatibility
Cage nuts with 1/4"-20 UNC thread (A-2278) are also available for lighter mountings. Check the thread size of the original bolt before ordering. 5/16" UNC is coarser (18 threads per inch) than 1/4" UNC (20 threads per inch).
Historical context
Cage nuts were used as standard during WWII on jeep bodies to simplify assembly where access to the rear was impossible. The system was originally developed for rapid wartime production.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Alle Willys / Ford / Hotchkiss jeeps | 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971 |