Question: Which veteran's association meaning "steel helmet" was decorated by the Nazi Party?

Context paragraphs:
SSh-60: The SSh-60 (СШ-60 (Russian: стальной шлем образца 1960 года/stalnoy shlyem, or steel helmet) was a product improvement of the Soviet SSh-40 steel helmet of the Soviet Army and entered production around 1960.  It was not fundamentally different from the previous World War 2 era SSh-40.

Steel Helmet Veterans Memorial Badge: The Steel Helmet Veterans Memorial Badge was a pin issued by the Nazi Party to veterans of the Stahlhelm veteran association of the First World War.

Hawley Products Company: Hawley Products Company is a manufacturer of loudspeaker components.  The company is the oldest manufacturer of loudspeaker diaphragms in the world.  Historically, the company produced a variety of products composed of fibrous or plastic materials, including helmets, globes, microwave trays, automotive components, suitcases, and furniture.  Most notably, the company is remembered for its World War II military helmets and helmet liners used by soldiers in the United States Army, Marines, and Navy.  Hawley Products is the original designer of the M1 steel helmet liner.  The company is also one of the two original manufacturers of the M1 steel helmet liner, alongside General Fibre Company.  Additionally, Hawley Products designed and manufactured several versions of the pressed fiber military sun helmet used by the US military during World War II.  The military continued to use this sun helmet throughout most of the 20th century, including Naval personnel during the Persian Gulf War.

Modèle 1978 helmet: The Modèle 1978 helmet is a modern military steel helmet used by the French Army under the "F1" designation and commonly called "heavy helmet" (other nicknames include "locomotive skin cap").  It replaced the Modèle 1951 helmet, and is superseded by the SPECTRA helmet.

List of Nazis: A list of notable people who were at some point a member of the defunct Nazi Party (NSDAP).  This is not meant to be a list of every person who was ever a member of the Nazi Party.  This is a list of notable figures who were active within the party and did something significant within it that is of historical note or who were members of the Nazi Party according to multiple reliable publications.  For a list of the main leaders and most important party figures see: List of Nazi Party leaders and officials.

SSh-68: The SSh-68, Russian: СШ-68 (стальной шлем образца 1968 года/stalnoy shlyem, or steel helmet) (English: SSh-68 steel helmet model 1968) - is a steel helmet of the Soviet and then Russian Armed Forces.  The SSh-68 is further development of combined-arms helmet SSh-60.  It differs primarily in its greater strength, greater front slope of the dome and the shorter outer edge.  It is usually painted in dark green.

Brodie helmet: The Brodie helmet is a steel combat helmet designed and patented in London in 1915 by John Leopold Brodie.  In modified form it became the Helmet, steel, Mark I in Britain and the M1917 Helmet in the U.S. Colloquially, it was called the shrapnel helmet, Tommy helmet, tin hat, and in the United States the doughboy helmet.  Worn by Australians during WW2 and sometimes known as Panic Hat.  It was also known as the dishpan hat, tin pan hat, washbasin, battle bowler (when worn by officers), and Kelly helmet.  The US version, the M1917, was copied from the British Mk 1 steel helmet of 1916.  The German Army called it the "Salatschüssel" (salad bowl).  The term "Brodie" is often mis-used.  It is correctly applied only to the original 1915 "Brodie's Steel Helmet, War Office Pattern".

Stahlhelm: Stahlhelm (plural "Stahlhelme") is German for "steel helmet".  The Imperial German Army began to replace the traditional boiled leather Pickelhaube (spiked combat helmet) with the Stahlhelm during World War I in 1916.  The term "Stahlhelm" refers both to a generic steel helmet, and more specifically to the distinctive (and iconic) German design.

SS Chevron for Former Police and Military: The SS Chevron for Former Police and Military was a prior service qualification badge worn by members of the Nazi Party "Schutzstaffel" (SS) who had previously served as professional law enforcement, as members of the "Reichswehr" or members of the "Stahlhelm, Bund der Frontsoldaten" ("Steel Helmet, League of Front Soldiers").

Adrian helmet: The M15 Adrian helmet (French: "Casque Adrian" ) was a combat helmet issued to the French Army during World War I.  It was the first standard helmet of the French Army and was designed when millions of French troops were engaged in trench warfare, and head wounds from the falling shrapnel generated by the new technique of indirect fire became a frequent cause of battlefield casualties.  Introduced in 1915, it was the first modern steel helmet and it served as the basic helmet of many armies well into the 1930s.  Initially issued to infantry soldiers, in modified form they were also issued to cavalry and tank crews.  A subsequent version, the M26, was used during World War II.

Supporting paragraphs: Steel Helmet Veterans Memorial Badge Stahlhelm
Answer: Stahlhelm