Industrial Aluminum Aircraft Rivets (Solid Shank Flush/Universal Head)
Industrial Fastener / Hardware · Unknown industrial manufacturer (common suppliers include Alcoa, Cherry Aerospace, or Hi-Shear Corporation). These are commodity hardware items rather than branded luxury silver.
Pattern: Standard Solid Shank Rivet; likely MS20470 (Universal Head) or MS20426 (Countersunk) specification depending on the specific profile.
Type
Industrial Fastener / Hardware
Maker
Unknown industrial manufacturer (common suppliers include Alcoa, Cherry Aerospace, or Hi-Shear Corporation). These are commodity hardware items rather than branded luxury silver.
Material
Aluminum Alloy (typically 2117-T4, 2017-T4, or 7050). Contains 0% Silver. These are often mistaken for silver due to their 'silver-white' metallic luster and oxidation resistance.
Dimensions
Standard diameters typically 1/8", 5/32", or 3/16". Length varies by grip range. Weight is negligible, significantly lighter than silver (Aluminum density 2.7g/cm³ vs Silver 10.49g/cm³).
Description
A group of solid shank aluminum rivets. While their metallic gray color and cylindrical form can superficially resemble small silver pins or findings to the layperson, they are strictly utilitarian aerospace hardware used for joining airframe skins or structural components.
Key Features
Cylindrical shank with a single formed head; lightweight; non-magnetic; matte grey oxidation; absence of jewelry-style joinery or hallmarks.
Material & Composition
Aluminum Alloy (typically 2117-T4, 2017-T4, or 7050). Contains 0% Silver. These are often mistaken for silver due to their 'silver-white' metallic luster and oxidation resistance.
Finish & Decoration
Functional satin/matte finish. Often treated with a chemical conversion coating (Alodine) or anodized for corrosion resistance. No decorative engraving or artistic finish present.
Hallmarks & Stamps
Usually none on the individual piece, though some may have a small recessed 'dimple' or 'teat' on the head to identify the alloy type (e.g., a dimple for 2117 alloy). No silver purity hallmarks (925, etc.) are present.
Construction Details
Cold-headed and machined from aluminum wire stock. These are mass-produced industrial components designed for structural riveting in aviation and manufacturing.
Functional Features
Solid cylindrical shank for insertion into a pre-drilled hole; the tail is 'bucked' or deformed to create a second head, permanently joining two surfaces.
Handle & Grip Details
No handle; the cylindrical body is the 'shank' and the flared end is the 'head.' Grip refers to the thickness of material the rivet can successfully join.
Craftsmanship Details
Precision industrial machining. The tolerances on these fasteners are extremely tight to meet FAA and military specifications for structural integrity.
Authentication Indicators
Weight (extremely light), lack of hallmarks, and the specific industrial geometry of a rivet body. Testing with a silver acid kit would yield no reaction for silver.
Origin & Manufacturing
Various industrial centers (USA, Germany, China). Manufactured using high-speed cold-heading machines and heat-treated for specific shear strength.
Era & Period
Modern Industrial Era (1940s–Present). This design became the global standard during the expansion of the aerospace industry in WWII.
Age Estimate
Late 20th to 21st century. These show various levels of surface oxidation consistent with garage or workshop storage rather than ancient burial or antique usage.
Cultural Significance
Represents the height of 20th-century mass production and aerospace engineering. Culturally tied to the 'Rosie the Riveter' era of industrial labor.
Condition Notes
Fair to Good. Shows surface 'pitting' and white powder oxidation (aluminum oxide), which occurs when aluminum is exposed to moisture in a non-climate-controlled environment. Not consistent with silver tarnish.
Value Estimate
Nominal / Bulk value. Usually sold by the pound or in packs of 100 for $5-$15. They have no precious metal value.
Care & Maintenance
Keep dry to prevent further aluminum oxidation. If used for their intended purpose, they require no cleaning, but for display, a soft plastic brush can remove oxidation powder.
Similar Pieces
Silver pins, silver wire stock, or silver soldier. However, those would be much heavier, have different end-caps, and likely bear a stamp of fineness.
Interesting Facts
These rivets are the 'glue' that holds modern metal aircraft together. A single Boeing 747 uses over a million such fasteners in its construction.